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9 Best Greenhouse Kits Of 2023 | Reviews & Buyer’s Guide

Want to grow fresh produce in your garden but don't want to invest in an enormous greenhouse?

Glass greenhouse

We know that building a greenhouse on your own can be pretty time-consuming. Not to mention the hassle of hiring a gardener if you don't get it right the first time. 

So, instead of stressing over building a greenhouse, try purchasing a greenhouse kit online. Whether you need a petite greenhouse kit for indoors or a larger, sturdier option for building a vegetable garden, there is no shortage of options. So, today we're going to introduce you to the best greenhouse kits on the market.

Without further ado, let's get started-

Best Greenhouse Kits

Greenhouse. Organic food. Open greenhouse with tomatoes in the middle of the vegetable garden

From small compact designs to spacious structures, here's the list of the 9 best greenhouse kits to cater to your gardening needs and take your green thumb to new heights.

1. Home Complete Heavy-Duty Greenhouse Kit - Best for Easy Assembly

To begin with our list, we have a heavy-duty greenhouse kit by the brand Home Complete that is constructed out of steel and polyvinyl chloride. This all-season see-through greenhouse could be the perfect addition to your backyard garden. With no tools required to assemble it, you can start planting the day it is delivered.

Greenhouse - Walk in Greenhouse with 8 Sturdy Shelves and...
  • 8-SHELF GREENHOUSE KIT - The 8 greenhouse shelves provide...
  • INDOOR OR OUTDOOR - This portable greenhouse is ideal for...

Why Did We Like It? 

Right off the bat, we liked the fact that this product could come into use throughout the seasons. We know several garden and plant enthusiasts who would love this walk-in greenhouse for this very reason. With this greenhouse, gardening fruits, seeds, vegetables, flowers, or herbs for everyday cooking will become much more convenient.

Moreover, this kit comes with all the parts required to set it up, which means you don't need any tools to install this greenhouse. The greenhouse kit comes with a steel frame and weather-resistant PVC cover and is ideal for growing plants. With a dimension of 56 inches in length, 56 inches in width, and 76 inches in height, there is ample space for you to fit in and water the plants.

Besides, this medium-sized greenhouse kit can be used indoors as well. In case you don't have a backyard, it will work equally well in backyard patios, garages, or even the basement. Equipped with eight durable shelves, you can place multiple plants in pots and spread them out as you like. 

What Could've Been Better? 

Greenhouse kits are ideal for temperature control and blocking harmful UV rays, and this model does just that. In fact, out of most backyard greenhouse kits, this one is much easier to assemble and comes with a set of rods, ropes, and anchors. We only wish this model was slightly bigger to hold more plants.



Pros

  • Useful indoors and outdoors
  • Easy assembly
  • All accessories are included
  • Protects from direct sunlight




Cons

  • On the smaller side



Size: Various sizes available | Frame Material: Steel | Cover Material: PVC | Ventilation: Yes | Shelving: Yes | Additional Features: Roll-up door, windows, anchor system

2. Gardman Store Mini Greenhouse - Best for Small Spaces

The next option is a tiny one for those of you wanting to set up an indoor garden. The Mini greenhouse kit by Gardman Store is one of the smallest options available on the market today. This four-tier greenhouse is compact, lightweight, and portable, and you can assemble it on your patio without using any tools. 

Sale
Gardman R687 4-Tier Mini Greenhouse, 27" Long x 18" Wide x...
  • Ideal for small backyards or homes where space is an issue;...
  • Gives seeds, seedlings, and young plants an early start

Why Did We Like It? 

When we think of traditional greenhouses, a large green structure of plastic that you can walk into comes to mind! But not everyone has large spaces at home, so Gardman Store has developed a mini version that will fit in any house. In fact, the 27-inch long, 18-inch wide, and 63-inch high greenhouse is as small as a cupboard.

Let's say you have a small balcony, patio, or backyard that looks a bit bare, and you wish to stock it up with herb plants. That's when this model will come in handy, but that's not all this mini greenhouse kit can do. Before planting your young seedlings and plants in a bigger greenhouse, you can give them an early start indoors.

Also, the model comes with a clear polyethylene cover and roll-up style zippered door for quick access. And you will have no trouble assembling the pieces because the strong-fit tubular steel frame is light and needs no tools for installation.

What Could've Been Better? 

With a few delicate plants, they require extra care during the growing season and need protection from cold weather and heavy snow. Until they are mature plants, you can allow the new plants to propagate in this mini greenhouse. On the downside, this model might be too small if you have many plants to grow at once.



Pros

  • Compact greenhouse
  • Durable material
  • Lightweight
  • Four tiers for plants




Cons

  • Useful only indoors



Size: Small | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: Yes | Additional Features: Zippered door, shelves, roll-up windows

3. Ohuhu Walk-in Greenhouse Kit - Best for Ventilation

Up next, we have a walk-in greenhouse kit by the brand Ohuhu which comes with roll-up doors for easy entry. Consisting of three tiers on two sides, this option should be good enough to hold more than a few potted plants. If you are looking for a larger greenhouse, consider this model for your backyard. 

Sale
Greenhouse for Outdoors with Screen Windows, Ohuhu Walk in...
  • Warm yet Ventilated: With the zippered roll-up door and 2...
  • Large space: Constructed with 12 wired shelves – 6 on each...

Why Did We Like It? 

Sometimes you need a larger greenhouse to hold all your delicate plants to prevent heating on hot summer days. This model by Ohuhu is by far one of the best options you can buy if you want to protect plants but also provide ventilation. Since this high-quality greenhouse kit has two side windows, there is a constant supply of fresh air for plants. 

Additionally, it also has an observation window to monitor plants from the outside, something missing in most greenhouse kits. With 12 wired shelves and dimensions of 56 inches in length, 55 inches in width, and 76 inches in height, you can easily walk in to maintain the plants. 

What Could've Been Better? 

While we liked how spacious this option was and the rock-solid stability it provided, we felt it could improve on one aspect. The material might not be able to withstand very windy areas on open fields. So, if you live in an area particularly susceptible to storms, consider placing this greenhouse near the boundary walls to protect it.



Pros

  • No tools required
  • Warm yet ventilated greenhouse
  • Durable PE material
  • Come switch hooks and ropes




Cons

  • May be thin for windy areas



Size: Large | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: Yes | Additional Features: Zippered door, windows, anchor system

4. Eagle Peak Portable Greenhouse Kit

The canopy-style portable greenhouse kit by Eagle Peak is pretty lightweight, weighing merely 35 pounds. Thus, if you need to change greenhouse locations often, this model might suit you. Available in four different sizes, this foldable greenhouse has a solid steel base that comes with an anchoring system to hold the structure in place. 

Sale
EAGLE PEAK 8x6 Portable Walk-in Greenhouse, Pop-up Indoor...
  • EASY SETUP: Innovative easy setup technology allows ONE...
  • STABLE AND STURDY: With a steel-ceiling roof, the...

Why Did We Like It? 

Firstly, we think people who need a lot of space for their precious growing plants will love this model. It is a large greenhouse that allows one to move around freely without feeling cramped in the area. The plants have ample space to grow in all directions, and you can even find a corner to store your gardening tools.

Since this portable greenhouse is spacious, it allows natural sunlight to fall upon the plants at certain times of the day. The PE protective cover keeps the plants safe from the harsh local climate. 

Installation is a piece of cake that requires merely three simple steps - you set up the steel frame, lock the canopy, and adjust the angle. This gives you easy access through the door and helps the plants with the perfect coverage.

What Could've Been Better? 

The good thing about this model is that once you have the frame installed, the setup is quite sturdy with a steel ceiling. It is rigid enough to withstand outdoor temperatures and protects plants from harsher climates. However, the steel frame requires some muscle to set up in the first place. 



Pros

  • Breathable windows
  • A single-person set up
  • Reliable steel frame
  • Four sizes available




Cons

  • Frame may be heavy for some people



Size: Various sizes available | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: No | Additional Features: Zippered door, windows, UV protection

5. Quictent Large Walk-In Greenhouse Kit

Yet, another large walk-in greenhouse we have is this superb model by the brand Quictent. This one is for those with a huge backyard or lawn space and can accommodate a greenhouse of such massive proportions. Despite being huge in size, the structure remains relatively light at 26 pounds. 

Quictent 20x10x6.6 FT Large Walk-in Greenhouse for Outdoors,...
  • Upgraded Greenhouse 2 Mesh Zipper Doors & 8 Vents--2 Doors...
  • Reinforced Mesh PE Cover--heavy duty 2 layers PE cover with...

Why Did We Like It? 

What makes this model unique is its upgraded features of two mesh zipper doors and ten vents for airflow. Since the doors are wide, you can shut them off with a mesh door to prevent small animals from entering the greenhouse. The PE covers manage to keep the enclosure warm, yet the ten vents or windows support airflow. 

Apart from that, the heavy-duty PE mesh cover has two layers of reinforced mesh, making it completely water-resistant. This layer is also UV resistant but allows for 85% of the light to fall through to nourish your plants. The layer prevents plant burn and helps young plants to grow in a safe and temperate environment. 

Due to the powder-coated steel frame, you can expect the poles to keep the frame standing for a long time indeed. It consists of 10 bases and 20 stakes that stabilize the greenhouse while simultaneously keeping out the snow and wind. 

What Could've Been Better? 

Those who have already purchased this greenhouse kit claim that it turned out to be the best investment. And we agree that its size, strong frame, and mesh make it highly durable. All this at an affordable price too. But, extremely windy places will require more stones to keep the PE mesh in place.



Pros

  • 100% waterproof
  • Maximum Light transmission
  • Sturdy steel frame
  • One-year warranty for poles




Cons

  • Not suitable for windy areas



Size: Large | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: Yes | Additional Features: Zippered door, windows, UV protection

6. SV Scool Value Walk-In Greenhouse Kit

SV Scool Value has developed a robust and stable walk-in greenhouse that stands firm with the support of steel pipes. With an eco-friendly PE cover, this model is an excellent choice for placing several small plants in the same greenhouse. This model would be ideal as a garden or outdoor greenhouse.

SV SCOOL VALUE Greenhouses for Outdoors, PE Walk in...
  • Keep Ideal Heat and Humidity: The 2 Windows and Roll-Up...
  • Large Space: Outdoor greenhouse on both sides with 3 tiers 8...

Why Did We Like It? 

Larger greenhouses like this one are pretty convenient because one actually has space to walk into the water or fertilize plants. This option might be one of the best greenhouse kits to gift to someone because it is reliable and cost-effective. Place this affordable greenhouse next to your garden bed and promote delicate plant growth by moderating the temperature. 

Also, the PE cover is odorless, non-toxic, and low-temperature resistant, so one can use it for several years to come. Moving on to shelf stability, it is interesting to see the addition of 16 clip-shelf fixers that prevent the shelf from wobbling. Speaking of which, the ground nails and ropes provide additional stability to the greenhouse cover and prevent it from blowing away in winds.

What Could've Been Better? 

Since the PE material is resistant to corrosion, it makes for a much more durable alternative to PVC. Anyway, there were many complaints regarding this model, and most buyers were satisfied with its performance. But, a few complained of losing the greenhouse to strong wind.



Pros

  • Comfortable for tall people
  • Affordable
  • Lightweight
  • Accommodates two people




Cons

  • May not withstand strong winds



Size: Large | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: Yes | Additional Features: Zippered door, windows, UV protection

7. Palram Hybrid Hobby Greenhouse Kit

Up until now, we explored the world of plastic covers in the form of PVC or PE, but there are other common types of greenhouses too. Palram greenhouse kits make polycarbonate greenhouses that are incredibly tough and resistant to outdoor climates. If you live in frigid conditions, you might want to look at this option.

Sale
Palram - Canopia Hybrid 6' x 8' Greenhouse - Silver
  • TWO PANEL TYPES PROVIDE ULTIMATE BALANCED GROWING CONDITIONS...
  • STURDY THOUGHTFUL CONSTRUCTION WILL LAST A LIFETIME - Chosen...

Why Did We Like It? 

When it comes to super-durable materials, it doesn't get better than walled polycarbonate panels. This material is virtually unbreakable and handles much more impact than a plastic cover ever could. It is no wonder that polycarbonate is a common sight in places with plenty of snowfall. In fact, the panels are capable of withstanding snow weight of 15 pounds per square foot.

Apart from that, these panels can diffuse the sunlight eliminating UV rays entirely from reaching the inside. And, despite UV protection and permitting diffused light into the greenhouse, the panels remain crystal clear in appearance. Once you purchase the kit, it comes with a rain gutter, an adjustable roof vent, and a lightweight aluminum frame. 

What Could've Been Better? 

There is no doubt that this polycarbonate greenhouse stands the test of time no matter the climate around it. But, we found a few shortfalls that we'd like to discuss. Firstly, the product is quite pricey, so it may not fit everybody's budget. Secondly, the customer service team usually took some time before responding. 



Pros

  • Adjustable roof vents
  • Allows light diffusion
  • Transparent polycarbonate panels
  • Rust-resistant frame




Cons

  • Slightly expensive



Size: Various sizes available | Frame Material: Aluminum | Cover Material: Polycarbonate | Ventilation: Yes | Shelving: Yes | Additional Features: Sliding door, roof vents, rust-resistant

8. ShelterLogic Growit Greenhouse-In-A-Box

Up next, we have a waterproof greenhouse-in-a-box by the brand ShelterLogic that is available in three sizes. This product is opaque or translucent and comes in all-white with roll-up side panels. Its triple-layered thick cover is ideal for keeping plants warm in cold seasons.

Why Did We Like It? 

To begin with, this walk-in greenhouse is ready to build right out of the box. With three layers of protection in the covers, this thick layer is absolutely waterproof and UV-treated. Since it was designed for plants, the covers exclusively block out harmful UV rays to help plants grow properly. As mentioned earlier, the roll-up panels along with half-moon screen vents improve indoor ventilation.

Additionally, it consists of patented metal ShelterLock steel stabilizers that add strength and stability to the structure. Besides, its powder-coated metal frame is resistant to chipping, peeling, corrosion, and rust. Included in the kit are 15-inch auger anchors for a secure base.

 

What Could've Been Better? 

Certainly, this model had some brilliant qualities, making it fit for any large backyard. Its easy assembly is another point that customers seem to appreciate about this product. However, this model is quite bulky and heavy, so you may not be able to move it around often if you need to.



Pros

  • Promotes air circulation
  • Stable anchoring
  • Durable plant shelter
  • Protects against UV rays




Cons

  • Not portable



Size: Various sizes available | Frame Material: Steel | Cover Material: Polyethylene | Ventilation: Yes | Shelving: No | Additional Features: Zippered door, roll-up sides, UV treated

9. OGrow Greenhouse Kit

Lastly, we have a mesh-style greenhouse kit that is medium in size and has a total of four shelves. Try this greenhouse model if you are a garden enthusiast and wish to grow your favorite plants all year round. It is not very large, but big enough to walk into and care for your potted plants.

Sale
Machrus OGrow Greenhouse Kit, Multiple Sizes, Greenhouse,...
  • VERSATILE & PORTABLE: The OGrow Machrus Greenhouse Kit is a...
  • SPACIOUS WALK-IN DESIGN: Despite its compact size, the OGrow...

Why Did We Like It? 

We selected this greenhouse kit as the final pick for this list for its simplicity. The design and structure are a perfect fit for a small backyard and garden, and its see-through design makes it easier for sunlight to reach the plants. At the same time, the mesh protects from harsh summer or afternoon heat that could damage plants. 

With a frame made of heavy-duty powder-coated steel, the shelves are also strong enough to hold heavy potted plants. The kit also comes with a velcro hook and loop connection with ties to hold the greenhouse in place. Its assembly is also pretty easy and does not take much time due to its being lightweight.

What Could've Been Better? 

This medium-sized greenhouse goes well on patios and can be placed in areas with full sunlight without fear of damaging plants. It does a great job of blocking sunlight, but not much can be said about its wind, rain, or snow-resisting features. A few customers noticed that the covers developed tears after heavy rain or gusty winds.



Pros

  • Protects against direct sunlight
  • Hooks and ropes provide stability
  • Big enough to walk in
  • Strong shelves can hold large plants




Cons

  • Mesh cover is not weather resistant



Size: Small to medium | Frame Material: Steel | Cover Material: PVC | Ventilation: Yes | Shelving: Yes | Additional Features: Zippered door, windows, roll-up design

Best Greenhouse Kits Comparison Table

ProductSizeFrame MaterialCover MaterialVentilationShelvingAdditional Features
Home Complete Heavy-Duty Greenhouse KitVarious sizes availableSteelPVCYesYesRoll-up door, windows, anchor system
Gardman Store Mini GreenhouseSmallSteelPolyethyleneYesYesZippered door, shelves, roll-up windows
Ohuhu Walk-in Greenhouse KitLargeSteelPolyethyleneYesYesZippered door, windows, anchor system
Eagle Peak Portable Greenhouse KitVarious sizes availableSteelPolyethyleneYesNoZippered door, windows, UV protection
Quictent Large Walk-In Greenhouse KitLargeSteelPolyethyleneYesYesZippered door, windows, UV protection
SV Scool Value Walk-In Greenhouse KitLargeSteelPolyethyleneYesYesZippered door, windows, UV protection
Palram Hybrid Hobby Greenhouse KitVarious sizes availableAluminumPolycarbonateYesYesSliding door, roof vents, rust-resistant
ShelterLogic Growit Greenhouse-In-A-BoxVarious sizes availableSteelPolyethyleneYesNoZippered door, roll-up sides, UV treated
OGrow Greenhouse KitSmall to mediumSteelPVCYesYesZippered door, windows, roll-up design

Buying Guide For The Best Greenhouse Kits

1. Available Space

Before you consider any other factor, take a look at the space you have for a new greenhouse. Whether you plan to install one in the garden, backyard, patio, or even indoors, you need to measure the area before buying anything. This will prevent silly mistakes like buying a very large greenhouse for a tiny backyard. 

Alternatively, with a large and spacious area, it would not make sense to get a small greenhouse as the space will not be used effectively. If measuring does not give you a clear idea, mark the area with tape to get a visual representation of the area the greenhouse will cover. 

2. Greenhouse Shape

While this might not be the most important factor, some people can be quite particular about the shape. On the market, you will find three shapes that are more common than others - the traditional, octagonal, and the lean-to style. Anyway, you should always compare the available space and judge which greenhouse shape will fit best.

3. Plant Growing Space

You may already have a list of flowers, vegetables, fruits, tubers, or herbs you want to grow in the brand-new greenhouse. But, what's more important is figuring out how many plants you wish to raise at a time. 

In case you don't plan on growing too many, a 4x4 feet greenhouse could be enough. But, if you are sure about cultivating crops on a larger scale, a greenhouse of about 10x20 might be more fitting. Again, this will correspond with the space available for growing plants too. 

4. Materials Used

  •   Glass

Glass greenhouses look spectacular because you can see through them and observe the plants without stepping in. Also, it allows more sunlight to enter the greenhouse, thus making the interior warm and comfortable for plants. Apart from lasting a long time and having easily replaceable panels, they are also eco-friendly and do not contribute to pollution.

  •   Polycarbonate 

The strongest greenhouses are built of polycarbonate material, so it is no surprise that they are a popular option for building greenhouses. Glass will shatter upon impacts, such as the weight of heavy snow or a branch colliding due to strong winds. But polycarbonate material remains indestructible no matter the weather. 

However, they are prone to scratches that do not disappear unless you replace the panels. Also, the material is not particularly good for the environment. 

  •   Wood

Wood is a lovely material to use for greenhouses because it can reinforce the natural aesthetic of your home and yard. Cedar, pine, maple, and oak and good choices for making the frame for your greenhouse. However, the problem with wood is that it is susceptible to rotting and insect infestations. You may have to purchase chemically treated wood to use for this purpose. 

  •   Metal

Most greenhouse kits will include metal frames instead of wood because they are far more durable and easy to install. Within the metal category, there is a range of options to choose from depending on the company. Steel and aluminum are the most popular among them all. 

Even though they are cheaper and last longer than wood, you have to be careful to prevent them from developing rust. 

5. Ventilation

Improper air circulation is a massive problem in bad greenhouses, and mismanaged ventilation can suffocate the plants to death. Most medium to large greenhouse covers will have at least one door and a couple of vents to allow constant air circulation. 

Some massive greenhouses even install fans to force air indoors, but this might not be necessary on a residential plot. 

Greenhouse Kits FAQ's

  • Why should I use a greenhouse kit?

    Greenhouse kits offer numerous benefits, including extended growing seasons, protection from harsh weather conditions, control over temperature and humidity, and the ability to grow a wider variety of plants.

  • Can I assemble a greenhouse kit myself?

    Yes, most greenhouse kits are designed for easy assembly and come with detailed instructions. However, the level of difficulty can vary depending on the kit. It is important to carefully follow the instructions and consider seeking assistance if needed.

  • Do greenhouse kits require any additional equipment or accessories?

    Some greenhouse kits may require additional equipment such as heaters, fans, irrigation systems, and shelves. It is important to consider the specific needs of your plants and climate when choosing additional accessories.

  • Are there any maintenance requirements for greenhouse kits?

    Yes, greenhouse kits require regular maintenance to ensure optimal performance. This may include cleaning the panels, checking for leaks, adjusting ventilation, and monitoring temperature and humidity levels.

  • Can greenhouse kits be customized or expanded?

    Some greenhouse kits offer customization options or the ability to expand the structure in the future. However, it is important to check the specifications of the kit and consult with the manufacturer to determine the possibilities for customization and expansion.

  • Which Direction Should My Greenhouse Face ?

    According to a rule, people living in the northern hemisphere should place the longer side of the greenhouse southwards. This isn’t set in stone; instead, it’s just the ideal direction for maximizing sunlight for your plants. Alternatively, people in the southern hemisphere should point the broader part of the greenhouse towards the north.

  • What Is The Perfect Greenhouse Size ?

    As we mentioned earlier, greenhouse size will depend on the number of plants you wish to grow combined with the size of your backyard. Usually, people do not like to buy anything smaller than a 6-foot wide greenhouse because you can barely fit anything in there.

  • warm house with tomatoes in private garden in back yard with green lawn

    Conclusion

    All in all, if you are keen on gardening organic produce for your family, a greenhouse is a must-have for the backyard. And the kits presented here should save you a lot of time and effort in building a new one. However, the question arises- which of these greenhouse kits should you select?

    In our opinion, the most versatile option remains the Heavy Duty Greenhouse Kit by Home Complete. This easy-to-assemble option is sturdy and the perfect size for a small garden. Another convenient option is the Gardman Store Mini Greenhouse which is ideal if you are looking for a smaller greenhouse. Either way, we hope this guide helps you select the best greenhouse for your home.

    See you next time, bye!

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