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8 Best Small Greenhouses Kits on The Market

Don’t feel restricted by space or budget when choosing a greenhouse. A misconception is that you need to make a huge investment or need lots of space to own a greenhouse. 

Don’t worry this is not the case. In this post, we will go over the best small greenhouse kits on the market today. Find a greenhouse that is perfect for you regardless of how much space you have. 

Let’s dive in. 


Hybrid Greenhouse Series

Pros Cons
  • Comes in multiple sizes 
  • 4mm thick roof panels 
  • Rust resistant aluminum frame
  • Inexpensive but offers some durability 
  • Easy to assemble
  • Not very durable 
  • Thin side walls 
  • Single door 
  • Lots of plastic parts

The Hybrid Series greenhouse is a great small greenhouse option because it's affordable and comes in multiple sizes. This is one of the very few small greenhouses that you can get for less than $1,000. 

The Hybrid greenhouse comes in multiple sizes: 

This greenhouse comes with durable 4mm twin-wall polycarbonate wall roof panels and 0.7mm twin-wall polycarbonate side wall panel. This greenhouse offers durability that other plastic and PVC greenhouses don’t offer. 

But, its important to note that the Hybrid greenhouse is best for moderate weather conditions that won’t experience strong winds, rain, or snow. With the thin sidewalls, the greenhouse can be susceptible to certain weather conditions.


Key Features

  • Highly resistant, safe polycarbonate greenhouse kit (blends Fine Shield Technology™)
  • Combines two types of glazing for balanced light exposure
  • 4mm twin-wall roof panels block up to 99.9% of UV rays
  • Crystal clear, virtually unbreakable polycarbonate panels that provide 90% light transmission
  • Life-time resilient polycarbonate plastic walls; do not fracture, turn yellow or opacify over time
  • Stout, rust-free aluminum structure
  • Clean-lined and functional design
  • 26 sq feet growing space and 6.5' of head room
  • The Nature Series works with Palram's line of hobby greenhouse accessories to maximize space and a more productive growing season
  • 5-year limited warranty

Best Small Durable Greenhouse on a Budget: Mythos Greenhouse Series

Pros Cons
  • Affordable 
  • Comes in many different sizes 
  • Includes different color frames 
  • Thick 4mm polycarbonate panels on wall and roof
  • Easy to assemble
  • Frame assembly at corners uses durable plastic 
  • Some plastic pieces 
  • Green and grey frames are more expensive 
  • Frame construction is not as durable as other frames

If you are in need of a small greenhouse but you are on a budget then the Mythos series is the best option. The Mythos series will allow you to purchase an aluminum, polycarbonate panel greenhouse for under $1,000. 

The Mythos series has three different small-sized greenhouses that are under $1,000: 

Each of the sizes comes in a silver, green, and grey frame. The grey and green frame are more expensive than the silver base. Even considering the increase in price these models are slightly more than $1,000. 

One of the best features of the Mythos series is that for such an affordable price you get 4mm twin-wall polycarbonate panels and an aluminum frame. Many other small greenhouses on the market make you compromise on durability with very thin walls and weak plastic or PVC frames. 

The Mythos greenhouse offers the best combination of size and durability for the price. This greenhouse is ideal because it will be able to withstand moderate levels of harsh rain, wind, snow, and heat while also offering protection to your plants.


Key Features

  • 100% UV protected, virtually unbreakable polycarbonate panels; do not fracture, turn yellow or opacify over time
  • Light-diffusing twin-wall glazing for soft light irradiance and level temperatures
  • Blocks 99.9% of harmful solar UV rays
  • Lockable door handle for extra protection and safety
  • Built-in gutters included, for a sustainable irrigation system
  • Rust-resistant aluminum frame for high durability and strength
  • Easy assembly
  • Wide roof, high walls
  • Roof vent for airflow and regulation of heat and humidity
  • The average setup time is four to five hours
  • The greenhouses are available in various sizes & colors
  • 5 Year Limited Warranty

Best Small Lean-to Greenhouse: SB Montecito 6’ x 8’ Lean-To Greenhouse

  • Comes in a variety of sizes
  • Made with 8mm twin-polycarbonate walls 
  • Reinforced aluminum frame 
  • 16 gauge steel reinforcements 
  • Comes with multiple roof vents
  • Includes barn style dutch door
  • Made in the USA
  • Kit is not pre-made, made to order which causes delays in shipping 
  • Limited and not traditional sizing options 
  • Only one option for panel size and material

The SB Montecito Greenhouse is a great small lean-to greenhouse. This greenhouse kit stands out because there are not many lean-to greenhouse kits on the market. 

This greenhouse kit stands out for two main reasons it comes with a heavy-duty aluminum frame and it has extremely durable 8mm polycarbonate panels. 

These lean-to models come in a variety of different sizes. It comes in different widths as the base from 6, and 9 feet. It also comes in a variety of different lengths including 8, 12, 16, 20, and 24 feet.

A few other features that add to the heavy-duty aspects of this greenhouse include an all bolt construction and rafter ties for additional durability. In addition, the aluminum frame is bolted together using 16-gauge steel plates creating one of the strongest aluminum greenhouses on the market.

With very few lean-to greenhouse kits on the market, the versatility is that this greenhouse comes in a variety of different sizes that are highly affordable.


Key Features

  • Frame made of weather-resistant, high-quality, mill finish aluminum frame.
  • 6ft high side walls for maximum growing space
  • 8mm twin-wall polycarbonate panels
  • All bolt construction for durability
  • Rafter ties for extra strength
  • Dutch door for easy use and improved ventilation
  • Mill finish or bronze powder coat.
  • Includes roof and side vents standard
  • Easy instruction manual included
  • Optional greenhouse growing kit with all essentials to get started
  • Made In the USA
  • Pre-cut, pre-drilled, and modular construction for easy assembly

Best Small Heavy-Duty Greenhouse: Glory 8’ x 8’ Greenhouse

Pros Cons
  • Ultra-thick 10mm wall and roof polycarbonate panels 
  • Thick aluminum frame 
  • High wind resistance and snow load 
  • Multiple roof vents 
  • Large heavy-duty door
  • Comes in multiple sizes 
  • Spacious headroom with 8’3”
  • Very heavy greenhouse 
  • Expensive 
  • Only comes in one greenhouse width 
  • No extension kit 
  • Panels are glazed and not completely transparent

The Glory 8’ x 8’ Gable Greenhouse is one of the best heavy-duty greenhouses on the market. It comes with an extra-thick aluminum frame and 10mm twin-wall polycarbonate panels. 

This makes this small greenhouse extremely heavy-duty and capable of withstanding harsh weather conditions such as heavy winds, rain, and snow. 

The greenhouse comes with an extra-thick aluminum frame and 10mm thick polycarbonate panels. These features give the greenhouse a wind resistance of 62 miles per hour and a snow load of approximately 20.5 pounds per square foot. These are durability ratings that rank amongst the highest in the industry. 

The benefit is that the Glory Greenhouse comes in a variety of different sizes. All the greenhouses come with an 8-foot width and multiple lengths ranging from 8, 12, 16, and 20 feet. 

It also comes with a large heavy-duty door and multiple roof vents, as well as side will louvers which provide sufficient ventilation.


Key Features

  • Entirely built with heavy-duty multi-wall glazing for controlled light exposure and heat insulation
  • House-like, classic design, upgraded with fine matt, dark-grey powder-coated aluminum frame
  • Maintains level temperatures and diffuses sunlight
  • Up to 100% protection from harmful sun rays (UV)
  • Life-time resilient polycarbonate plastic walls; do not turn yellow or become brittle over time
  • Reinforced, extra-thick (+50%) non-rusting aluminum frame for an extra-rigid, highly durable, and corrosion-resistant structure
  • 64 sq feet of growing space and 8.8' of headroom
  • Lockable, heavy-duty, 31.7 inches wide door
  • Automatic vent opener – opens and closes the roof vent without the use of electricity (start opening point: 12-15°C)
  • Integrated internal & external anchoring system, offers upgraded structural support during harsh weather conditions.
  • Easy assembly
  • Maintenance-free
  • Available in various sizes
  • Works with Palram's line of hobby greenhouse accessories to maximize space and a more productive growing season
  • 10 Year Limited Warranty


Best Small Victorian Greenhouse: Junior Victorian 8’ x 10’ Greenhouse

Pros Cons
  • Option of glass or polycarbonate panels 
  • Great for extreme weather conditions 
  • High snow load and wind resistance
  • Moderate size with tall side-walls 
  • Optional full setup accessory kit
  • Includes two roof vents and 1 louver windows
  • Thick aluminum frame
  • Decorative roof ridge 
  • Built-in gutter system
  • Expensive
  • The greenhouse is heavy and can limit potential locations 
  • Accessory Kit is optional and an additional cost 
  • Can take some time to build and install

The Royal Victorian Greenhouse is the best small victorian greenhouse on the market. This greenhouse comes with strong 4mm tempered-glass wall and roof panels as well as thick aluminum frame. Another unique feature is that the greenhouse comes with instructions and equipment to secure the greenhouse to a concrete foundation. 

These features of the greenhouse give it a high wind resistance and strong snow load. In addition, the greenhouse comes with a 15 year limited warranty. 

The Royal Victorian also comes in various other sizes, including a 10’ x 20’, 10’ x 15’, and 8’ x 10’. In addition, it also comes with an optional premium accessory kit which includes a seed tray, top shelf, and two full-length shade cloths. It can also be customized to include a drop-down kit option which allows you to add a drop-wall between 12” and 30”. 

This greenhouse comes in an elegant Victorian style that is sure to elevate the appearance of your backyard. The Victorian greenhouse style is characterized by the signature roof ridge decor.


Key Features

  • Thick Aluminum Frame
  • Electrostatic frame finish
  • 4mm tempered glass or 10mm polycarbonate triple wall panels 
  • Sliding door that can be installed on either wall of the greenhouse. 
  • Includes 1 louver window
  • 6 roof vents for effective circulation (4 automatic and 2 manual roof vent) 
  • Decorative roof ridge
  • Includes built-in gutter system
  • 15 Year Limited Warranty
  • TUV & GS Tested and approved 


Best Small Tunnel Greenhouse: Sigma 10’ x 13’ Tunnel Greenhouse

Pros Cons
  • Affordable given the features it includes 
  • Thick polycarbonate walls 
  • Durable steel frame 
  • High wind resistance and strong snow load 
  • Comes in multiple lengths with a wide 10ft base.
  • Extendable up to 100 ft. in length by 6 ft. extensions
  • Heavy frame and panels 
  • Does not come in different widths - only 10 ft.
  • Expensive 
  • Only one option for panel walls. 
  • Does not have pre-made foundation option

The Sigma Greenhouse is a great small tunnel greenhouse. Not only is it small and compact but it's also highly durable and weather resistant. It features a galvanized steel frame and heavy-duty 6mm double-wall polycarbonate panels. 

As a result, this greenhouse is built for all weather conditions including strong winds such as  65 MPH and a snow load of 160 kg / m². 

This greenhouse is not only heavy-duty but it also has many unique features that separate it from other greenhouses on the market. 

  • Two doors - one on either end wall 
  • Comes in various lengths starting at 13’, 20’, 26’, and 32’
  • Extendable by 6ft outside of standard sizes and up to 100ft
  • Large growing space with 7ft roof

Tunnel-shaped greenhouses are great because they disperse weight well and also prevent snow, rain, and debris from accumulating on the frame of the greenhouse. The tunnel shape allows everything to easily slide off improving its load capacity and wind resistance. 

Another major benefit of the Sigma Tunnel greenhouse is that it is very affordable. For the quality and durability that this greenhouse offers the pierce is unmatched.


Key Features

  • Extendable up to 100ft
  • Galvanized Pipe Frame
  • Heavy-Duty, Rust-Resistant Frame
  • Snow Load Weight of 160 kg / m²
  • Wind Resistance up to 65 MPH
  • 6mm Double-Wall Polycarbonate Panels 
  • Can Be Installed with or without a base
  • 5 Year Warranty


Best Small Gothic Arc Greenhouse: Riga II S 8’ x 7’

Pros Cons
  • Extremely durable 
  • Gothic arc design is maintenance-free and durable 
  • Aluminum frame 
  • Thick 8mm and 10mm polycarbonate panel walls 
  • Comes in multiple sizes 
  • Barn style door 
  • Roof vent
  • Expensive 
  • Low sidewalls

The Riga III S 8’ x 7’ greenhouse is the perfect small greenhouse. This greenhouse is small and compact and can fit even the narrowest spaces. The Riga III S greenhouse is one of the most durable greenhouses on the market with an anodized aluminum frame and 10mm twin-polycarbonate walls. 

The gothic arc design ensures that rain and snow don’t accumulate on top and slide right off. 

In addition, it comes with an anodized aluminum frame for additional durability. It also provides exceptional insulation against cold temperatures with 8mm polycarbonate sidewalls and 10mm polycarbonate end-walls. For additional insulation, it also comes with heavy-duty rubber seals and silicone caulking. 

This greenhouse also comes with a greenhouse bundle option which includes the greenhouse, greenhouse foundation base, 1 top shelf, and 1 regular shelf. 

The Riga Greenhouse also comes in a variety of other sizes depending on your needs. They build everything from hobby-sized greenhouses to commercial-sized greenhouses. Below are some of the different sizes they offer: 


Key Features:

  • Durable UV-coated polycarbonate twin-walls
  • Anodized Aluminum frame
  • 8mm polycarbonate side-walls 
  • 10mm polycarbonate end-walls
  • Barn style door w/lock and key
  • 2 roof windows 
  • 1 large rear wall window
  • Heavy-duty rubber seals and silicone caulking 
  • 10 Year Warranty


Best Small Wood Greenhouse: SB Red Wood 7’ x 8’ Greenhouse

Pros  Cons
  • Comes in multiple sizes 
  • Heavy-duty California redwood 
  • Multiple panel options 
  • Includes multiple windows and vents
  • Affordable given the quality of greenhouse you get
  • Hand made in the USA
  • Hand crafted takes time to arrive 
  • Sizing options are limited
  • Wood can succumb to weather conditions

Finding a freestanding greenhouse is not easy. There are not many wood greenhouses on the market but Santa Barbara Greenhouse makes some of the best wood greenhouses on the market. 

SB greenhouses use durable and heavy-duty california redwood with a reinforced frame that is built to withstand all four seasons. In addition to the highly durable frame, you have two greenhouse panel options. 

SB Redwood greenhouses come with two panel options: 4mm tempered glass and 6mm twin wall polycarbonate panels. Both of these panel options are highly durable and provide exceptional insulation capabilities. 

This greenhouse comes in a variety of different sizes with multiple width options of 7, 9, and 14 feet. It also comes in a variety of different lengths including 8, 12, 16, 20, and 24 feet. This is great because you can find a greenhouse that fits your needs which includes a variety of options from small to large.


Key Features

  • Frame made of weather-resistant, high-quality California Redwood
  • Vertical 6ft high side walls for maximum growing space
  • Option of 4mm tempered glass or 6mm twin-wall polycarbonate panels
  • All bolt construction for durability
  • Extra framing for improved durability
  • Includes roof and side vents standard
  • Easy instruction manual included
  • Optional greenhouse growing kit with all essentials to get started
  • Hand Crafted
  • Made In the USA
  • Pre-cut, pre-drilled, and modular construction for easy assembly