A green house, also known as a hot house, is a structure made mainly of glass where plants that require certain
climactic conditions are kept. The structure is available in different sizes from small sheds all the way down to industrial sized buildings. A small greenhouse is known as a cold frame and the inside of the greenhouse is exposed to sunlight such that the interior becomes far warmer than the external temperature. Glass greenhouses contain equipment’s such as screening installations, heating, cooling, and lighting and can even include a computer in order to ensure that the plants receive an optimal temperature. A variety of techniques are used to evaluate the optimality of temperature. Contrary to popular belief, these ideas aren’t new.
Read our latest guide about the best small greenhouses.
Brief History of greenhouses
The idea of growing plants in a controlled environment have been around since Roman times. Roman gardeners used to use artificial methods similar to those of greenhouses in order to ensure that their emperor received his favorite vegetables 
throughout the year.
The first time a heated greenhouse was written about was in the 1450s in Korea where there were detailed descriptions of how the vegetables should be cultivated in artificially heated environments. The concept reappeared again in the Netherlands and England in the 17th century. The first person who was credited with building a modern greenhouse was the French botanist Charles Lucien Bonaparte who grew one in Holland during the 1800s in order to grow medicinal plants.
Experimentation with the design continued throughout the century where glass and construction techniques were improved to create the structures that we are familiar with today.
Read our complete guide about the best raised garden beds.
Design
Ventilation
This is one of the most important elements of a successful greenhouse without which growing plants can become susceptible to problems. The main purpose of ventilation is to regulate the temperatures and humidity to an optimum level to prevent buildup of plant pathogens and ensure a steady supply of fresh air for photosynthesis and plant respiration.
Heating and Cooling
This is one of the costlier elements of a greenhouse, especially in colder climates. The main problem is the amount of heat that is lost through greenhouse coverings.
Passive heating methods require lower energy and solar energy can also be captured for certain periods of time (summer/day time) in order to release it during colder times. Meanwhile cooling can be conducted simply by opening windows because of the temperature difference.
Lighting
Light that enters the greenhouse is used by the plants and sometimes is also equipped with grow lights which can be switched on at night to increase the amount of light that plants get, thereby increasing the yield with certain crops.
Carbon dioxide enrichment
This technique is established in order to enhance carbon dioxide concentration as well as increase its temperatures.
Types of greenhouses
Domestic greenhouses
The glass on these is typically 3mm, also known as horticultural grade. This usually means that it is good quality glass that does 
not contain air bubbles. The plastics it uses mostly are polyethylene film and multiwall sheets of polycarbonate material or even acrylic glass.
Commercial greenhouses
These are often high-tech production facilities for vegetables or flowers. The glass green
These also have equipment’s such as screening installations, heating, cooking and lighting that can be automatically controlled by a computer.
Dutch Light
This is a standard unit of construction (approximately 730 mm x 1422 mm) which has a large glazed area with smaller panes of 600 mm width. This style of greenhouse usually have sloped sides as well as a cold frame.
Uses
- Greenhouses are great for growing plants in a controlled environment. The main factors to be controlled are temperature, levels of light and shade, irrigation, fertilizer application and atmospheric humidity.
- They can be used in order to overcome the shortcomings of a piece of land if there is a short growing season or poor light levels.
- They are very important in the food supply of high-latitude countries.
- They are useful in growing flowers, vegetables, fruits and transplants.
- Their applications outside of the agricultural industry include producing steam for solar-enhanced oil recovery.
Surprisingly, greenhouse gardening also offers benefits that go beyond conventional gardening as well.
Advantages of greenhouse gardening
- Longer growing season
Within the greenhouse, temperatures do not vary as the sun’s radiation is trapped within an enclosure and is able to retain heat within the structure. This means that growing season can extend to colder climates too.
- Gardening possible in any weather
Gardening is very difficult in bad weather, but with a greenhouse this is no longer something to fret about as everything is covered. The garden can remain dry even if it is pouring outside.
- A variety of produce can be grown
Since one can grow a wide variety of plants when using a greenhouse, this allows individuals to enjoy experimenting with exotic 
plants which aren’t necessarily found locally.
- Unaffected by pests
When gardening or growing produce in the open, the product can be impacted by pests and predators such as moles, rodents etc. All of these can easily be kept out through traps and screens.
- Creating an optimum growing environment
By creating an optimum growing environment, one can grow healthier and better looking plants.
- Protect plants from bad weather
A greenhouse is able to offer protective layers which can protect the plants from bad weather such as high winds, thunderstorms and blizzards.
- Environmentally friendly
By allowing gardeners to go green, there are plenty of benefits for both the earth as well as the gardener. In such a situation, adding more plants helps provide the gardener with fresher, cleaner atmosphere which makes the greenhouse a valuable tool for fighting global warming.
- Eliminate use of pesticides
Most commercially raised crops require pesticides. Greenhouses make it possible to grow plants without any toxic pesticides since the gardeners are able to control their own produce.
- It makes room for insects that are beneficial
Some insects are beneficial for plants such as lady begs. These are important as they help keep out nuisance insects. In case of an open air garden, beneficial insects can easily leave. Greenhouses are able to contain these insects which can then keep nuisance insects away.
- The greenhouse can be customized for your needs
As a gardener, you get to choose what kind of greenhouse you want which works well with the type of plants you intend to grow.
- Raising your own food
Some people like growing plants as a food source. By growing food throughout the year, gardeners can enjoy spending lesser on food.
- Saving up on energy consumption
When using a greenhouse, it is easy to conserve energy such as water, since energy houses can more easily be controlled when compared to traditional gardening. Using a greenhouse also encourages its users to change their lifestyle and live a more environmentally friendly life. It also teaches children and family members how to garden and this in turn helps brings families together.
- Reduces stress
Growing plants through greenhouse also teaches the individuals some valuable tips for relaxation. Gardening can help reduce stress levels, a skill that can then be carried out throughout the year.
Top 15 Best Greenhouses in 2022
1. Rion Grand Gardener 2 Clear Greenhouse
The Rion Grand Gardener is 8’ x 12’ in dimensions and is unbreakable due to its 4 mm thick twin-wall polycarbonate roof panels.
These are 100% UV protected and high impact resistant. The clear polycarbonate side panels offer a classic style without the additional stress of using glass. It is easy to put together because of its easy to use pin and lock system. The barn shaped design helps create high headroom as well as a larger gardening space. It also has a heavy duty resin frame that is built to improve and increase insulation while creating further durability which increases its life for the years to come.
Uses and Capabilities
The Grand Gardener 2 Clear has two kinds of unbreakable polycarbonate coverings which provide the best of all experiences. The crystal clear polycarbonate side walls allows one to have a clear view while still keeping it fully safe. Meanwhile the twin-wall roof panel diffuses 90% of the sunlight in order to provide a soft and balanced light. The frame is weatherproof as well which features easy assembly through a simple pin and lock system. The extruded resin frame improves both insulation as well as durability. The roof style also creates ample headroom which gives the gardener ample room to garden.
Additional Features
The double doors provide easy access to all entrants while also ensuring ventilation. The roof vent also has a heat vent even if the doors are closed. It is secured to concrete pad or heavy timber foundation and it also has an optional base kit for additional height and increased stability. If you add a layer of bubble wrap to the windows, it can keep the greenhouse warmed by 45 degrees. Construction of the greenhouse is easy as they go well together and are engineered such that once they are assembled into a full structure, they provide adequate strength.
Pros
- Every individual part has a label attached to it for easy reference.
- They are water resistant labels which stay on and are readable no matter what the weather.
- It comes with a rubber seal which goes around each of the wall panels.
- The product is very durable and easy to put together.
Cons
- Gathering required pieces from different places can be a tiring process.
- The doors are not designed properly and therefore don’t function as well as they should.
2. Palram Nature Series Mythos Hobby Greenhouse – 6′ x 8′ x 7′- Silver
The Palram is a crystal clear greenhouse which is unbreakable because of its polycarbonate roof as well as wall panels. It offers 
100% protection from UV as well as 90% light transmission directly on to the plants themselves. The polycarbonate panels provide protection from UV and the total greenhouse is built at 132 square feet growing space with 6.8 feet of head room, providing it ample space to grow its plants as well as the gardener to walk around comfortably. It also has double wide doors, three adjustable roof vents, rain gutters as well as a lockable door handle. It is also equipped with a five year limited warranty.
Uses and Capabilities
One of the main reasons Palram works well is because a gardener can easily extend their season as it allows the user to get enough time to grow their seedlings as well as enable the plants to survive the frost during fall time. It also provides the additional benefit of hardening plants from the beginning which reduces the risk of losing plants after relocating them to an outside environment. Beginning from the seed is also an effective way to minimize cost because trips made to a nursery or even a grocery store will be reduced because of the solution present within the comfort of one’s home. Growing one’s own plants also allow the gardener to engage in physical activity while also placing them outside which further reduces their stress and anxiety.
Additional Features
The vegetables are fresh and hold a higher mineral intake. Since everything is grown within the greenhouse, you have 100% control of how many pesticides, herbicides and fertilizers are used. The polycarbonate used for these greenhouses is among the strongest polymers, making it virtually unbreakable and also preventing it from being shattered. It helps protect plants from harmful solar radiation as well. There is also a lot more features than what meets the eye. There is an integrated rain gutter that disperses rain water which can be collected for a sustainable irrigation system. There is also added ventilation there is also a roof vent as well as a split door design which keeps ventilation flowing throughout warm days. Installation is so easy that it can be snapped together through a simple do it yourself model.
Pros
- The greenhouse is solid with little gutters on the side to lead water away.
- It has many truing gadgets which strengthen its joints.
Cons
- It is complicated to put together.
3. Palram HG5508PH Hybrid Hobby Greenhouse
The Palram Hybrid Hobby Greenhouse is pretty much unbreakable due to its 4 mm twin wall polycarbonate roof panels. It is 
able to block up to 99.9% of its UV rays and also helps diffuse sun light by reducing the risk of burning plants and also provides shading areas. It had clear polycarbonate side panels which provide 90% light transmission. The rust resistant aluminum frame also has 48 square feet of growing space. The greenhouse is inclusive of plant hangers, adjustable roof vents, rain gutters, lockable door handles with additional magnetic door handles as well as galvanized steel base for structural support.
Uses and Capabilities
It has ten plant hangers which are used in order to support vine crops, hanging baskets and can also be used to install shade cloth on the inside frame of the greenhouse. The plant hangers are made of polypropylene and also come with a five year limited warranty as well as a US based customer support system, making them available throughout the day. This greenhouse attempts to give its users the best of both worlds by balancing two advanced polycarbonates as well as providing a 6 foot wide frame which is designed in order to cater to your growing needs within smaller spaces.
Additional Features
The greenhouse provides an excellent light management system through its twin-wall polycarbonate which provides excellent durability, light diffusing properties as well as heat retaining abilities. The twin wall roof blocks 99.9% of harmful UV radiation and creates a system of diffused light which helps grow plants as well as reduced plant burns and shade areas. The side panels are equally durable and provide a 90% transmission of light and the polymers are made of only virgin materials that don’t become brittle or discolored over time. It also has a rust resistant aluminum frame as well as a galvanized steel base which can withstand the test of time.
Pros
- The instructions are easy to follow.
Cons
- The greenhouse gets hot easily and the windows need to be kept open in order to help it cool down.
4. Abba Patio 8 x 10-Feet Large Walk in Fully Enclosed Lawn and Garden Greenhouse with Windows
The Abba Patio is a garden greenhouse with large windows and is made of strong, durable reinforced transparent PE cover which
is manufactured through heavy duty material. It is made with strong powder coated steel frames that are able to resist chipping, peeling, rust as well as corrosion. The windows also have insect netting which can be used in order to control pests. The big foot plate also increases stability and is easy to assemble as it does not require any tools. It is also lightweight and therefore easy to remove. It is an excellent entry level offering for people learning to work with greenhouses.
Uses and Capabilities
It also comes with reinforced canvas panels, huge doors as well as windows. The designs are simple yet elegant and the quality of the material makes it excellent value for money. The entrance is roll up and measures 71 inches x 38 inches and provides easy access to the inside of the greenhouse. There is enough space for one to move around, to place large plants as well as create ventilation. The greenhouse is lightweight and portable even after it has been assembled. The PE Cover is heavy duty reinforced with white polyethylene plastic cover which can provide cover to the plants while guaranteeing extra protection against direct sunlight.
Additional Features
It is made from high quality materials and comes with insect netting on the Velcro windows which can ensure pest control. The greenhouse also includes big foot plates which enhances stability and securely anchor the greenhouse to the ground. The fabric of the canopy is water and UV resistant due to tis 300 D Oxford tough fabric and the frame itself is made from high grade steel which does not chip, peel or corrode because of its powdered coating. It also has high eaves which provide extra headroom. Further stability can be added to the structure by adding extra stakes as well as lines included in the set.
Pros
- It is easy to carry and disassemble.
- It comes with its own storage bag which can fit anywhere.
- The powder coating is high quality and guarantees that it won’t break or bend easily.
- It is easy to put together without relying too much on instructions.
Cons
- The frame can be brittle and easy to bend.
- The stitching is not precise which causes the Velcro to come apart.
5. Outsunny 6′ x 4′ x 7′ Twin Wall Polycarbonate Walk-in Garden Greenhouse
The Outsunny twin wall polycarbonate walk-in garden greenhouse makes gardening possible all year round. Its dimensions are
6’ L x 4’ W x 7’ H and it is the perfect way to stay in the soil throughout the year no matter the weather conditions. The UV-resistant polycarbonate sheets helps keep plants, vegetables, as well as flowers safe while still allowing natural light to pass through easily. The powder-coated UV-resistant polycarbonate sheets help keep plants, vegetables and flowers safe while still allowing natural light to pass through easily. The powder coated aluminum alloy frame with the galvanized base also provides solid support to the entire structure.
Uses and Capabilities
The sliding door offers easy access to the inside while it is made out of the same solid material as the rest of the structure. The rooftop vent panel also features a hinged rooftop panel which creates proper ventilation and provides it to the inside of the unit as well. It provides proper protection to the plants without having to spend much money. The powder coated aluminum frame, UV resistant poly-carbonate sheets withstand elements. The transparent sheets allow natural lighting to pass throughout the entire structure. The rooftop vent creates increased ventilation for the unit through a convenient single sliding door design which provides easy access to the inside.
Additional Features
It is easy to assemble as well as to take down. The sliding door design offers easy access to the inside and is made of the same solid material as the rest of the structure. It also features a hinged rooftop panel which creates proper ventilation that is provides to the inside of the unit. The powder coated aluminum alloy frame offers durable support while the poly-carbonate sheets stand up to the elements. The convenient single sliding door design makes it easy to provide access to the inside. The rooftop vent ensures excellent ventilation while the galvanized base provides stable support for the whole structure.
Pros
- It is easy to assemble.
Cons
- The sliding door doesn’t track well and has large gaps.
6. Best Choice Products 15x7x7ft Portable Large Walk in Tunnel Garden Plant Greenhouse
The Best Choice Garden Plant Greenhouse has eight roll up windows with screens which allow you, the gardener, to control the 
amount of light and air you let in based on optimum growing conditions. Its zippered door provides easy access into the walk-in structure of the greenhouse. It also has a heavy duty cover that protects flowers and plants from harsh weather conditions such as rain, wind or even snow. The high grade powder coated steel tube frame is resistant to rust and is built to last years. It also includes guy ropes and stakes for stability while its overall dimensions are 180″(L) x 84″(W) x 84″(H).
Uses and Capabilities
It is built as a walk-in tunnel greenhouse and is weather resistant allowing the user to walk in with confidence, ease and the assurance that plants will grow safely within. The walk in tunnel greenhouse also ensure that plants are protected from rough weather conditions and the roll-up windows do wonders in controlling the amount of light that enters the greenhouse simply by rolling the windows on its sides. It has four roll up windows on each side which allows light and air to penetrate the greenhouse easily from a variety of angles. It is also large enough, giving the feel of an indoor garden because of its dimensions i.e. 15’ x 7’ x 7’.
Additional Features
The walk in door makes way for easy access and allows the gardener to put in a variety of plants without compromising the amount of space they would need in order to grow to its full potential. The walk in tunnel greenhouse is easy to set up or even dismantle for relocation. The high grade silver powder coated steel tube frame as well as its heavy duty threaded PE cover are accompanied with guy ropes and stakes in order to increase stability. By doing so, the greenhouse ensures a space and a healthy garden that can cater to your needs.
Pros
- It provides great value for money.
- It is spacious enough to grow a variety of plants.
- The side windows provide a view and also an opportunity to roll down in case it gets hot.
- It is easy to construct even if it takes some time and common sense.
- It is as easy to disassemble as it is to put together.
Cons
- The plastic can become brittle.
- It is not built to last longer than a year.
7. Quictent 2 Doors 20 Stakes Heavy Duty 19.7’x10’x6.6′ Portable Greenhouse
The Quictent two doors greenhouse is made of a metal double zippered front and back door which creates an opportunity for 
wind to pass through the greenhouse easily, which in turn gives the greenhouse a longer life. It also has excellent ventilation due to its ten vents, the windows can be rolled up with screens while the two doors with metal zippers create excellent ventilation and area for the wind to flow through. It is eco-friendly and its heavy duty transparent reinforced polyethylene cover material creates maximum solar performance. It is also 100% UV protected as well as water proof.
Uses and Capabilities
The powder coated heavy duty steel framework can last a very long time without anyone having to worry about rusting or rotting. This is because the steel frame is rust proof and easy to set up, not to mention portable as well. The overlong cover makes the greenhouse airtight as well as secure. It can also easily be buried in the soil which makes it easy and useful. It also comes with a lifetime warranty which means that within the warranty period, any defective part can easily be replaced free of charge. They are also known for their excellent post sale service.
Additional Features
The dimensions are 20’x10’x7′ and it has two doors, eight side vents and twenty stakes. Quictent has been in the tent business since the 21st century which allows it to be equipped with the means to provide customers with excellent service as well as consistently improved products over the years. The doors can easily be rolled with Velcro. It has an updated two layer thick cover with reinforcement mesh molded which helps protect plants from rain and sun while the transparent cover lets 85% sunlight through the greenhouse. The extended cover design creates better closure with high humidity and temperatures for the plants.
Pros
- The greenhouse is inexpensive and provides value for money.
- It is easy to set up.
Cons
- The zippers aren’t durable and get completely blown out with worse weather conditions.
8. Peaktop Large Greenhouse Outdoor Walk in Grow Garden Plant Growing Green House
The Peaktop greenhouse has five windows and two doors. It is ventilated, breathable as well as incredibly easy to pass in and out.
The doors are made of metal zippers which are very strong and offer an excellent enclosed space for winters. It also has twelve stakes as well as on overlong cover. This allows one to strengthen their greenhouse with the stakes or even allows them to bury the cover in the soil on a windy day. The steel framework is powder coated and has super strong bearing strength. It is made with transparent reinforced polyethylene roof/ wall material/ UV protection and is waterproof as well as warm on the inside.
Uses and Capabilities
Replacement parts for various parts of the greenhouse can be replaced within twenty four months. Let the garden grown the whole year round easily since the greenhouse is easy to walk into, is small as well as light. It is also easy to set up and takes less than five minutes without any tools. It functions sturdily whether on soil or hard surfaces such as concrete. The powder coated steel frame also has middle rails which further increase its stability against elements. This one piece rip stop cover is also protected with UV and has a zippered front door as well as four side vents which are made for increased ventilation.
Additional Features
It is great for protecting plants and trees and is made from 100% waterproof material. The transparent poly material allows maximum solar performance for the plant and ensures a warmer temperature for it as well. The reinforce PE further makes the cover stronger than the regular poly material strength. The double zippered front door and four exhaust vents are designed in order to increase cross ventilation. The full closed cover maintains high humidity levels which make it easier to grow tropical plants, vegetables, fruiting plants or even herbs. Its dimensions are 10′ L x 9′ W x 8′ H.
Pros
- It is sturdy and well designed.
- Their customer service is great and they are willing to make changes and receptive to feedback.
- The covering material is durable.
Cons
- It can’t withstand tough weather conditions.
9. Outsunny 20′ x 10′ x 7′ Plastic Portable Outdoor Patio Walk-in Greenhouse
The Outsunny Walk in greenhouse is the perfect way to extend your growing season while managing your plants easily and 
keeping them in moderate temperatures. It can be installed in two ways, one by setting it on a hard surface or the second is to simply anchor it into soil. It is made of heavy duty steel construction and has a galvanized finish which resists rust, corrosion, chipping and peeling. It also has four slant bracing tubes, a front cross bar as well as reinforced tubes down the middle to ensure stability. Its transparent cover is tough as it is made from transparent and durable PE plastic covers. These covers aim to protect plants while still ensuring that enough nourishment and sunlight seeps through. The cover can also be attached to the frame which includes both tethers as well as a single sided tape.
Uses and Capabilities
The greenhouse has eight roll up windows with mesh netting which create enough room for cross ventilation and even climate control while ensuring that insects and pests do not have an easy way in. The entrance is a roll up and has a large zipped roll up door which provides access to the inside and can also be attached to the top in order to create enough space for one to talk in and out of. It can also be anchored into the soil easily and the stability can further be increased with the help of four screw ground stakes, four supporting rods as well as an overhanging cover.
Additional Features
Whether you are a home gardening enthusiast or looking for a way to grow plants throughout the year, this greenhouse is ideal as it provides a protective setting while saving precious money. The PE mesh cloth helps keep the crops fresh under perfect weather conditions and can then be reinforced by a sturdy powder coated steel tube frame. This is ideal for a gardener who is looking to keep his plants healthy both through the hotter and colder months of the year. It is perfect for people looking to protect their plants from extreme weather while stimulating growth in ordinarily unproductive times. It is also great for cultivating plants through all the seasons. Its overall dimensions are 19.75ftx9.75ftx6.75ft.
Pros
- It is inexpensive.
- It is easy to set up.
- It is a quick solution for gardeners who are new to using greenhouses.
Cons
- The frame is not sturdy enough.
- In order to make it work efficiently, one needs to reinforce metal tubes that can bend.
10. Giantex Portable Walk in Greenhouse Plant
Giantex is a greenhouse that is ideal for outdoor use and helps put gardener’s minds at easy by extending their growing season 
and making it all possible from your very own backyard, no matter what the weather conditions. It is easy to set up and can be finished in just about thirty minutes. The green powder coated steel frame is built to withstand all types of weathers and can avoid rust for a very long time. The steel is made with high quality materials and is solid enough to be used outdoors without causing any untoward damage.
Uses and Capabilities
The greenhouse has zipper doors which creates easy access and anyone can use it easily for everyday use. It also has ventilated windows which makes it easy to grow healthy plants, the design is conducive for plant growth and cultivation. The spacious walk in tunnel provides the perfect solution for anyone looking to grow vegetables, fruits, even flowers throughout the year. The flower house itself has a solid and stable structure while the heavy duty powder coated steel frame can also prevent rust corrosion and falling off, which makes the product durable. Furthermore, the durable mesh PE cover protects it from direct sunlight, is waterproof as well as UV resistant.
Additional Features
The eight screen shutter windows, two zipper doors also help achieve ventilation, create a regulated temperate and climate and also protect from other threats such as pests, creating an ideal growing condition for food throughout the year and also making it possible to bring crops into the market. It is a high quality product which provides a large growing space within a heavy duty powder coated steel frame which is resistant to corrosion, rust and peeling. The middle rails add to its stability as well. It is fashionable and made from non-toxic, eco-friendly PE. It is high grade 140 g PE fabric and meshall-edge design which leads to extremely high light transmittance.
Pros
- The frame fits the holes perfectly.
- It provides great value for money.
- The size is ideal.
- It is portable and really extends the season.
Cons
- It needs anchors.
11. Quictent 2 Doors Portable Greenhouse
The Quictent two doors portable greenhouse has twelve stakes for stability which come with the package and help strengthen the 
greenhouse. It also has five exhaust vents towards the upper part of sides as well as a double zippered front door and back door which enables cross ventilation and even venting for the hotter days. The cover design helps make the greenhouse more airtight and secure and easy to bury in the soil. The two doors (the metal zipper front and back door) allow wind to pass through easily thereby ensuring the longevity of the greenhouse.
Uses and Capabilities
The heavy duty powder coated steel framework as well as heavy duty transparent reinforced polyethylene roof/wall material creates enough space for maximum solar performance. It is also ISO 9001:2000 certified and easy to set up. Its portability is another win which has been possible since the company has been making tents since the early 21st century. Now it further enhances its innovations and is able to come up with products that it customers enjoys with ease. The greenhouse is compact and lightweight and can allow the garden to grow all year round. The whole set up required less than five minutes and no tools. It can work on all types of surfaces be it soil or hard surfaces like concrete.
Additional Features
The greenhouse is crafted with powder coated steel frames as well as middle rails in order to further add to the stability against the elements. The one piece rip-stop cover is also UV protected and features five side vents for ventilation. It is made from 100% waterproof material which is a great beginning for protecting both plants and flowers. It is made from reinforced PE which makes the cover stronger than normal poly material. It can also provide a full closed cover which maintains high levels of humidity for growing plants, vegetables, plants and herbs. It is 7.84’ in height which is great to let plants grow, especially the ones on the larger side. The steep slopes are also great for shine and also help prevent pressures from snow and rain on to the roof.
Pros
- It is easy to construct and deconstruct.
Cons
- The anchors provided are too small.
12. Sundale Outdoor Gardening
The Sundale Outdoor Gardening is a greenhouse that can hold an adequate amount of plants and gardening tools. The cover 
needs to be tied to the frame such that the greenhouse is sturdy and stable. The four plastic stakes and ropes make the greenhouse even more stable and prevents it from being blown away. It is ideal for one’s backyards or homes or even to place on a deck, patio or balcony as it comes with features such as UV protection. It is weatherproof and is also protected from insects, thereby creating an ideal environment for one’s plants.
Uses and Capabilities
The roll up zippered door also makes it easy for one to get in and it is also easy to close the greenhouse simply by zipping it up and providing a warm, windless room for one’s plants where they can grow safely. It needs to be assembled and has a strong push-fit tubular steel frame as well as a PE cover which is assembled without the use of any tools, because there is an easy instruction manual which is also a part of the box. The product dimensions are 97(L) x 56(W) x 77.6(H) inches while every shelves dimensions are 47.83(L) x 10.63(W) inches.
Additional Features
The company has decades of experience in manufacturing umbrellas, hammocks and other furniture products which equips them with vibrant and fresh designs which help bring more aesthetic and comfort to outdoor structures. The company also comes up with colors and fabrics in keeping with the seasons so that customers are always given the best fabrics and styles and even add a flair to the patio. The product is made with high quality materials such as tubular steel, long lasting resin, natural wood and even versatile aluminum. The package comes with a greenhouse, four stakes, four ropes and one instruction manual.
Pros
- It is easy and fast to assemble.
- It is an attractive unit.
Cons
- It does not hold up to the wind.
- The cover needs to be replaced after prolonged exposure to the sun.
13. Homewell Mini Walk-In Greenhouse
The Homewell mini walk-in greenhouse creates the perfect greenhouse environment which protects plants and seedlings from 
elements such as weather and climate. They can also enjoy fresh, healthy vegetation for the entire year. The greenhouse has ample space and comes with six wired shelves, three on each side. It has 75 pounds weight capacity per shelf. The roll up door has a zipper access for entry. The walk in design offers enough space for ventilation and growth for plants that are large. The frame is sturdy and built with heavy duty powder coated steel. It also has reinforced clear polyethylene plastic covers which help retain heat and also prevent it from escaping.
Uses and Capabilities
It provides years of reliable use and does not fade or crack under the sun. It is easy to set up as well as to break down. It also does not require any tools for assembly and can be moved or stored easily with changes in weather. The dimensions are 56” x 29” x 77”. The door entrance is 30” x 64”. The three tiers with six wired shelves are enough for starting seedlings, young plants and flowers as well as extended growing seasons. It is also ideal for backyards, decks, patios and balconies. The design accommodates plants, tools, pots, supplies and a whole lot more.
Additional Features
The tubular powder coated steel metal frame provides ample support for plants and trays. The design also allows one to increase the amount of plants they keep in one location. The removable, clear plastic cover with its front panel door also helps contain the solar energy while improving growth by making plants easy to place as well as remove. If the greenhouse is taken care off, it can last many seasons without tearing or cracking. It also does not require any tools. It can be used in a variety of instances e.g. to cultivate plants in the early part of a season, to provide protection against winter, to grow tomatoes, peppers and even other vegetables.
Pros
- It is extremely easy to assemble.
Cons
- It is not heavy enough for terracotta type pots.
14. Green House HC-4202 Walk-in Greenhouse
The Walk in Greenhouse by Home Complete is the perfect addition for any home gardener. It has twelve sturdy shelves which 
create ample room for plants, seeds, herbs, vegetables and flowers to grow. It is also an ideal place to store gardening supplies. The gardening rack is perfect for both outdoor and indoor use, whether you keep it on your porch, patio, deck, garage or even your basement. The clear PVC cover is included which helps protect seedlings from the pesky cold or even insects which creates the perfect nurturing environment for their growth. This is perfect for all gardeners as they can grow their gardening season with ease!
Uses and Capabilities
The eight shelves are durable and create ample room for trays, pots and any plants one wishes to grow making it a convenient option for all types of gardeners. The greenhouse is perfect for both indoor and outdoor use and the clear PC protects the seedlings and create the ideal growing environment. Since it does not require any tools, the greenhouse is very easy to put together. All one has to do is simple put together with the help of the instructions and connect the rods. It also includes ropes and anchors for further stability and each shelf also has a zip tie in order to make sure that it is not tipped over.
Additional Features
It can be used in all seasons which is ideal to extend the growing season. It is also excellent for plants, seeds, herbs, vegetables and flowers. It is made from steel frame and PVC cover. Its dimensions are (L) 56.3”x (W) 56.3”x (H) 76.7” and it is green is color with a clear cover. The best part is rope, anchors and zip ties are included.
Pros
- The directions are illustrated and accurate.
- It can withstand strong bouts of wind.
Cons
- The cover does skirt out at the base and needs to be anchored down.
15. Gardman R687 4-Tier Mini Greenhouse
The Gardman R687 is perfect for small backyards or homes where there isn’t enough space hence it can be kept on a deck, patio
or balcony. It is ideal for seeds, seedlings as well as plants on an early start. It is made of clear polyethylene cover as well as a roll-up zippered door for easy access. It has a strong push fit tubular steel frame that can be assembled in minutes without any tools. Its dimensions are: 27″ Long x 18″ Wide x 63″ High.
Uses and Capabilities
It is a four tier mini greenhouse which is light, easy to assemble with no tools. It is also portable and made from clear polyethylene cover as well as a roll-up zippered door for easy access. It is portable and the reason the Gardman has been able to produce such a user friendly greenhouse is because it has been established as a leading garden products provider since 1992.
Additional Features
This greenhouse is multipurpose and provides an all in one gardening space where the user can garden consistently under an optimum environment where plants are protected. Once can grow organic vegetables, flowers, bulb plants, exotic plants and many other type of seedlings. They can be grown every year.
Pros
- It is true to its description.
- It is easy to assemble
Cons
- It needs a vent at the top.