Greenhouse Buying Guide: The 40 Best Greenhouses

by Caitlin McCormack | Last Updated Mar. 2nd, 2016

Greenhouses are an excellent way to help extend your growing season, protecting plants from extreme temperatures and the elements, as well as for starting plants from seeds. They are generally quite reasonably priced and are made from durable materials that should give you several years of use.

While there are many benefits to greenhouses, it’s important to remember watering will be an issue, as the natural rains will not reach your plants, and overheating can be an issue in extreme summer heat.

There are three main types of greenhouses:

Cold frame, which are bottomless and can easily be moved. They are ideal for the early spring and late fall seasons to help protect and encourage plants to grow that would otherwise perish due to cooler temperatures.

Starter, which are small to medium in size and ideal for starting seedlings and hardening off plants which will be transplanted to your gardens.

Grower, which are the largest and can be used to start seedlings, harden off plants, grow crops to harvest, and even cure them for storage.

No matter which type you purchase you’ll want to consider if there is adequate size, ventilation, insulation, and durability for your needs. All of these variables will ultimately impact the final price of your unit.

With the above information in mind, in no particular order here are 40 of the greenhouses we consider to be best, based on available features and average customer ratings and reviews.

1. Gardman R687 4-Tier Mini Greenhouse

This compact greenhouse offers 4 shelves where you can grow your garden’s plants and vegetables to your heart’s content, and can easily be set up on your deck, patio, or even a balcony.

Key features:

  • Full length, roll-up zipper
  • Sturdy, tubular steel frame
  • Plastic cover

Cost: *Est. $46.15

2. OGrow Deluxe Walk-In 3 Tier 6 Shelf Portable Greenhouse

This greenhouse boasts durable heavy duty powder coated steel shelving perfect for displaying your beloved greenery in full sun. It features an easy Velcro connection to provide you with years of long-lasting use.

Key features:

  • Durable, clear plastic cover
  • Anchors not included
  • 75-pound weight capacity per shelf

Cost: *Est. $62.69

3. Gardman 7610 4-Tier Greenhouse with Reinforced Cover

This greenhouse features 4 shelves to hold and display your seedlings along with a roll-up, zippered door for quick and convenient access.

Key features:

  • Sturdy, tubular steel frame
  • Easily assembles in just minutes
  • Includes guy ropes and metal stakes

Cost: *Est. $50.84

4. Homewell Mini Walk-In Greenhouse 4 Shelves

This greenhouse boasts durable heavy duty powder coated steel shelving perfect for displaying your beautiful greenery in full sun. The door rolls up for quick and convenient access to your plants.

Key features:

  • 2 shelves on either side for a total of 4
  • No tools required
  • Can install on patio, deck, balcony

Cost: *Est. $55

5. Ogrow Deluxe Walk-In 6 Tier 12 Shelf Portable Greenhouse

This portable greenhouse boasts a durable powder coated steel design that features 12 shelves for all of your growing needs. It has Velcro connections to provide you with years of long-lasting usage.

Key features:

  • Durable, clear plastic cover
  • Walk-in for convenient access
  • Anchors sold separately

Cost: *Est. $82.39

This greenhouse is easy to set up and easily portable, to provide you with an outdoor growing space anywhere you need it. It features 3 zippered doors that allow for easily access to your plantings and sufficient ventilation.

Key features:

  • Durable PVC covering
  • Strong powder coated steel frame
  • Protects plants from extreme temperatures

Cost: *Est. $44.97

This outdoor greenhouse boasts a generous 7’x12’ design with walk-in entry for ease of accessing your plants. It comes complete with 6 windows to provide adequate ventilation and protection from insects.

Key features:

  • Roll-up, zippered door
  • Easily portable
  • Durable, powder coated steel frame

Cost: *Est. $95.99

8. Ogrow Ultra Deluxe Compact Outdoor Seed Starter Greenhouse Cloche

This simple outdoor greenhouse provides a practical and affordably-priced solution to starting your seedlings and keeping plants flourishing. It features an easy Velcro connection to provide you with years of long-lasting use.

Key features:

  • Durable, powder coated steel frame
  • Strong PVC cover
  • Zippered windows for convenient access

Cost: *Est. $28.76

9. Ikea Greenhouse, Indoor/Outdoor

This cute little greenhouse box is suitable for use both indoors and outdoors and is ideal for succulents, herbs, and other small plantings, without taking up too much space.

Key features:

  • Durable steel frame
  • Roof vents for temperature and humidity control
  • Simple, beautiful design

Cost: *Est. $44.24

10. Flower House FHPH155 PlantHouse 5 Pop-Up Plant House

This outdoor greenhouse is available in a number of different height configurations to suit all your gardening needs and boasts a quick, simple setup that is suitable for use both indoors or outdoors.

Key features:

  • UV-protected fabric for longer life
  • Open floor can be set up over existing plants
  • Storage carry bag included

Cost: *Est. $119

11. Ogrow Deluxe Walk-In 2 Tier 8 Shelf Portable Lawn and Garden Greenhouse

This outdoor greenhouse features 2 tiers with 8 shelves total to help display all your plants. It has been constructed from durable, reinforced PE and heavy duty powder coated steel shelving for years of use.

Key features:

  • Connects with ties for ease of use
  • Zippered, roll-up door
  • Anchors included

Cost: *Est. $81.55

Available in a choice of different sizes to suit your specific gardening needs, this outdoor greenhouse offers a sturdy, stable, and semi-permanent solution for your growing needs. It boasts a rust-resistant aluminum frame and adjustable roof vent.

Key features:

  • Durable polycarbonate panels block 99.9% of UV rays
  • Includes lockable door handle
  • 5-year warranty

Cost: *Est. $600.75

This outdoor, tunnel style greenhouse boasts a rust-resistant high grade silver powder coated steel tube frame and heavy duty threaded PE cover for years of reliable usage. It comes complete with 8 roll-up windows for ventilation and protection from insects.

Key features:

  • Includes guy ropes and stakes
  • Zippered, roll-up door
  • Protects from rain, wind, or snow

Cost: *Est. $199.95

14. Ogrow Ultra-Deluxe 4 Tier Portable Bloomhouse

This portable greenhouse features 4 shelves and a zippered, roll-up door to provide easy access to all your plantings. It features a simple Velcro connection to provide you with years of long-lasting usage.

Key features:

  • Heavy duty powder coated steel shelving
  • 75-pound weight capacity per shelf
  • Anchors not included

Cost: *Est. $40.64

15. Zenport SH3212A Garden Cold Frame Greenhouse Cloche

This greenhouse is easily portable, to provide you with an outdoor growing space anywhere you need it. It features 2 zippered doors for easy access to your plantings.

Key features:

  • Easy to assemble
  • Strong steel frame
  • Helps protect plants from extreme temperatures

Cost: *Est. $33.31

16. Spring Gardener Gable Greenhouse, 6 Feet X 8 Feet X 7 Feet

Available in a choice of size configurations to suit your specific gardening needs, this outdoor greenhouse features easy-to-assemble wing nuts, which require no tools to set up. The fabric has been UV coated to provide years of continued usage.

Key features:

  • Sturdy, rust-resistant frame
  • Insect netting included
  • Roll-up windows for ventilation

Cost: *Est. $197.91

This greenhouse offers a practical and affordable way to get your little ones started in the garden. It boasts 6 shelves and a colorful design kids love. There’s even a child-friendly zipper for convenient in-and-out access.

Key features:

  • Heavy duty powder coated steel shelving
  • 75-pound weight capacity per shelf
  • Easy Velcro connections

Cost: *Est. $83.99

18. Flower House FHPH120 PlantHouse 2 Pop-Up Plant House

This outdoor greenhouse is available in a number of different height configurations to suit all your gardening needs and boasts a quick, simple setup suitable for both indoor or outdoor use.

Key features:

  • UV-protected fabric for longer life
  • Open floor can be set up over existing plants
  • Storage carry bag included

Cost: *Est. $38

19. Gardman 7600 Extra Wide 4-Tier Greenhouse with Reinforced Cover

This greenhouse comes complete with 4 shelves and a zippered, roll-up door that provides quick and easy access to all your plantings. The cover is made from durable, reinforced PE and the frame is a sturdy, powder coated metal tubular design.

Key features:

  • Easy to assemble
  • No tools required
  • Includes guy ropes and stakes

Cost: *Est. $61.78

This outdoor greenhouse features a portable and incredibly durable design that is ideal for use year-round. It boasts a reinforced PE cover and powder coated steel frame for years of dependable usage.

Key features:

  • Easy to assemble, no tools required
  • Includes 8 windows for increased ventilation
  • Zippered, roll-up door

Cost: *Est. $199.99

21. Educational Insights Greenthumb Greenhouse

This compact greenhouse boasts 2 shelves and a zippered, roll-up door that allows you to easily access your plantings. It comes complete with a clear vinyl cover that fits snuggly over the metal frame to keep heat and humidity right where you want it.

Key features:

  • Ideal for year-round use
  • Lightweight, portable design
  • Easy to assemble in just minutes

Cost: *Est. $47.72

This greenhouse offers a compact footprint without sacrificing on height, to help you grow all your plants year-round. It features a walk-in design with 8 shelves to hold all your seedlings and a zippered, roll-up door for convenient entry.

Key features:

  • Easy to assemble
  • No tools required
  • Heavy duty plastic covering

Cost: *Est. $49.97

23. Bloom 4 Tier Greenhouse (Pack of 2)

This greenhouse kit comes complete with 4 shelves and a durable, reinforced PE covering to help retain maximum heat. It comes in a convenient package of 2 for those with greater gardening needs.

Key features:

  • Easy to assemble
  • Lightweight, portable design
  • Powder coated steel shelves and frame

Cost: *Est. $41.67

This portable greenhouse comes complete with 6 shelves and boasts a compact design that is ideal for smaller spaces or little gardeners. It features a zippered, roll-up door for convenient access and increased ventilation.

Key features:

  • Easy to assemble
  • Lightweight, portable design
  • Durable PVC cover

Cost: *Est. $69.99

25. ShelterLogic Grow-It Organic Growers Greenhouse with Mesh Scrim Cover

This sturdy outdoor greenhouse boasts a generous 6’x8’ footprint and features a high grade, premium powder coated steel frame and PE fabric cover that provides enhanced illumination while blocking out harmful UVA and UVB rays.

Key features:

  • Zippered end panel screens
  • Includes anchors
  • Easy to install, no tools required

Cost: *Est. $169

26. Happy Planter 4-Tier Portable Greenhouse with Four Steel Shelves and Clear PVC Cover

This mini greenhouse boasts 4 shelves for storage and a zippered, roll-up door to provide convenient access to all your plantings. It comes complete with a durable, powder-coated metal frame and plastic cover for years of usage.

Key features:

  • Choice of clear or mesh covers
  • Easy to assemble, no tools required
  • Lightweight, easily portable

Cost: *Est. $34.49

Available in a wide selection of size configurations to suit any home gardener’s needs, this outdoor greenhouse boasts a durable metal frame featuring SmartLock connectors for quick and easy setup. It comes with 100% UV-protected, nearly unbreakable polycarbonate roof and walls panels.

Key features:

  • Choice of frame colors
  • Includes lockable door handle
  • 5-year warranty

Cost: *Est. $858.99

This spacious outdoor greenhouse boasts a generous amount of room for at-home growers and features an extra reinforced powder coated stainless steel frame for increased stability and durability. It boasts a UV-resistant fabric PE mesh covering to help protect your plants.

Key features:

  • Zippered, roll-up front door
  • Includes 8 exhaust vents
  • Quick and easy setup, portable design

Cost: *Est. $166.59

This greenhouse boasts 4 shelves for storage and features a lightweight design that makes it easily portable for all your gardening needs. The open bottom can even be placed over existing plants.

Key features:

  • Easy to install
  • Rust-resistant metal frame
  • Roll-up door

Cost: *Est. $49.95

30. King Canopy GH1010 10-Feet by 10-Feet Fully Enclosed Greenhouse

This spacious outdoor greenhouse offers a generous planting area and features a fully-enclosed, water-resistant cover to help protect your plantings.

Key features:

  • Easy to assemble
  • Fire-retardant cover
  • Durable, powder coated steel frame

Cost: *Est. $231.59

Available in a selection of size configurations to suit any home gardener’s needs, this outdoor greenhouse boasts a durable metal frame that is easy to assemble. It comes with 100% UV-protected, nearly unbreakable polycarbonate roof and walls panels.

Key features:

  • Choice of frame colors
  • Includes lockable door handle
  • 5-year warranty

Cost: *Est. $439

32. Gardman 7624 Poly-Tunnel with Reinforced Cover and Windows

This outdoor greenhouse offers a tunnel-style design that is ideal for covering large areas and allows for walk-in entry. The open bottom allows it to be placed over existing plantings and the lightweight design is easily portable.

Key features:

  • Zippered, roll-up door
  • Durable tubular steel frame
  • Includes guy ropes, stakes

Cost: *Est. $151.99

33. Flower House FHPH130 PlantHouse 3 Pop-Up Plant House

This outdoor greenhouse is available in a number of different height configurations to suit all your gardening needs and boasts a quick, simple setup that is suitable for use both indoors or outdoors.

Key features:

  • UV-protected fabric for longer life
  • Open floor can be set up over existing plants
  • Storage carry bag included

Cost: *Est. $52

34. Ogrow Large Heavy Duty WALK-IN 2 Tier 8 Shelf Portable Lawn and Garden Greenhouse

This portable greenhouse has been designed for easy 1-2-3 assembly thanks to its special heavy duty plastic connectors. It is suitable for use in the garden, on the lawn, or even on your patio or balcony.

Key features:

  • Sturdy powder-coated frame
  • Easily connects with ties
  • Includes 8 shelves, with a 75-pound weight capacity each

Cost: *Est. $149.16

Available in a wide selection of size configurations to suit any home gardener’s needs, this outdoor greenhouse boasts a durable metal frame featuring SmartLock connectors for quick and easy setup. It comes with 100% UV-protected, nearly unbreakable polycarbonate roof and walls panels.

Key features:

  • Choice of frame colors
  • Includes lockable door handle
  • 5-year warranty

Cost: *Est. $699

36. Quictent® Hot 4 tier Mini Portable Greenhouse w/Shelves

This mini greenhouse offers 4 shelves of storage capacity in a compact design that is ideal for use in gardens, on lawns, or even on patios and balconies. It boasts a heavy duty powder-coated steel frame and durable PVC cover.

Key features:

  • Zippered, roll-up door
  • Removable shelves
  • Lightweight, portable design

Cost: *Est. $47.99

37. Large Heavy Duty Greenhouse Walk-In Hothouse 185 Pounds By DELTA Canopies

This walk-in, outdoor greenhouse boasts a massive capacity for the most serious of home gardeners and features a rust-resistant heavy duty galvanized steel frame and reinforced mesh PE cover that blocks out UVA and UVB rays.

Key features:

  • Double zippered doors on either end
  • Hardware included
  • Suitable for year-round use

Cost: *Est. $429.99

38. Abba Patio Large Walk-In Fully Enclosed Lawn and Garden Greenhouse with Windows

This greenhouse boasts a spacious, walk-in design and features a rust-resistant heavy duty powder-coated steel frame and reinforced PE cover to help protect your plants. The 4 windows include mesh netting to allow ventilation and help protect against insects.

Key features:

  • Easy to assemble, no tools required
  • Portable design
  • Zippered door on each end

Cost: *Est. $229

39. CASTLECREEK Deluxe Walk-in Greenhouse

This walk-in style greenhouse comes complete with 4 durable metal shelves and a roll-up door for convenient access and increased ventilation.

Key features:

  • Includes guy ropes and stakes
  • Powder coated, high grade steel tube frame
  • Portable design

Cost: *Est $119.99

40. Flower House FHCV900 Conservatory Clear Greenhouse

This show-stopping greenhouse features a unique design that makes it as beautiful as it is functional. It easily sets up in just minutes and features a lightweight, portable design that requires zero assembly.

Key features:

  • Open bottom can be placed over existing plants
  • Screened vent openings for ventilation and protection from insects
  • Suitable for year-round use

Cost: *Est. $351.97

 
 
   
 
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