15 Best Greenhouse Kits for Self Sufficiency

greenhouse kits

Rion

There’s never been a better time to be more self-sufficient. It’s not only a healthy choice to grow your own veggies and berries, but it’s also great mental and physical therapy to keep you from feeling stuck inside. That’s when the perfect greenhouse kits can start a family adventure that’s good for everyone.

Greenhouses allow you to pursue a new or favorite pastime, no matter what the weather looks like outside, and they let you get a jump start on the growing season for flowers and vegetables. Whether you choose a mini greenhouse, cold frame or huge high tunnel, you can start and grow plants that you couldn’t ordinarily grow outside if you happen to live in colder climates.

Some of these greenhouse kits are even large enough to add additional raised planter boxes in the center to maximize every inch of square footage inside. For the most part, they’re made of lightweight, durable, and easy to assemble materials that you can handle yourself without hiring help. You’ll find our list runs from small to larger structures, so you can find the best fit for your growing needs.

What Are the Best Greenhouse Kits?

two tier mini greenhouse Amazon Customer Reviews
  • Perfect for kids
  • Fits very small spaces
  • Easy to assemble
Price: $61.19 Shop at Amazon Shop now Read our review
two tier cold frame Amazon Customer Reviews
  • Small and compact
  • Durable fir frame
  • Clear PVC panels
Price: $169.90 Shop at Amazon Shop now Read our review
4 tier mini greenhouse kit Amazon Customer Reviews
  • Small footprint
  • Sturdy construction
  • Zipper cover
Price: $56.38 Shop at Amazon Shop now Read our review
cloche mini greenhouse Amazon Customer Reviews
  • Powder coated steel frame
  • Two zipper doorfronts
  • Lightweight and sturdy
Price: $49.98 Shop at Amazon Shop now Read our review
raised garden cold frame Amazon Customer Reviews
  • Waist high
  • Lid props open
  • Durable wood construction
Price: $108.52 Shop at Amazon Shop now Read our review
walk in greenhouse Amazon Customer Reviews
  • Rust resistant tubing
  • Eight shelves
  • Walk in height
Price: $85.99 Shop at Amazon Shop now Read our review
pop up greenhouse Amazon Customer Reviews
  • Easy set up
  • Double doors
  • Durable construction
Price: $249.99 Shop at Amazon Shop now Read our review
metal and plex greenhouse Amazon Customer Reviews
  • Very sturdy
  • Rainwater catchment system
  • Easy to assemble
Price: $399.99 Shop at Amazon Shop now Read our review
small hardside greenhouse kit Amazon Customer Reviews
  • Small and functional
  • Beautiful design
  • UV light protection
Price: $1,499.00 Shop at Amazon Shop now Read our review
sunroom greenhouse kit Amazon Customer Reviews
  • A permanent option
  • Easy assembly
  • UV protection for plants
Price: $3,799.70 Shop at Amazon Shop now Read our review
four sided chalet greenhouse Amazon Customer Reviews
  • Big and beautiful
  • Durable construction
  • Five year warranty
Price: $1,916.21 Shop at Amazon Shop now Read our review
large high tunnel greenhouse Amazon Customer Reviews
  • Galvanized steel frame
  • UVA/UVB blocking cover
  • Huge growing space
Price: $409.99 Shop at Amazon Shop now Read our review
geodesic dome greenhouse kit Amazon Customer Reviews
  • Resists severe weather
  • 250 square feet of space
  • Looks clever
Price: $1,449.00 Shop at Amazon Shop now Read our review
large hobby greenhouse kit Amazon Customer Reviews
  • Rust resistant fram
  • UV protecting
  • Indestructible clear panels
Price: $2,413.99 Shop at Amazon Shop now Read our review
Colonial style greenhouse Amazon Customer Reviews
  • It's adorable
  • Well constructed
  • Dutch door and real windows
Price: $5,999.00 Shop at Amazon Shop now Read our review
Our Unbiased Reviews
  1. 1. Educational Insights GreenThumb Classroom Greenhouse

    Pros:
    • Easy to assemble with no tools
    • Fits in even the smallest space
    • Study and easy to clean
    Cons:
    • Some assembly required
    • Relatively expensive for the size
    • Very small capacity, cannot hold many plants

    If you are in need of an extra small greenhouse for a small balcony, tabletop, classroom, or any other small space, this two-tier kit from Educational Insights is the ideal greenhouse to buy. This greenhouse resembles full-sized steel frame models but on a much smaller scale.

    It is easy to assemble with no tools required, consisting of a steel frame, plastic connectors, and wire mesh shelving. The top shelf is optional, so if you have taller plants you can leave it out. The clear vinyl cover provides 360 degree access to valuable sunshine to keep your plants nice and warm.

    The door in front has an easy access zippered opening and can be rolled up and tied in place as well. 

    Size: 38″ x 36″ x 19″

  2. 2. MCombo Wooden Garden Cold Frame Greenhouse

    Pros:
    • Very affordable compared with other wooden frame greenhouses
    • High quality construction
    • Hinged lid for easy one handed access to your plants
    Cons:
    • Some assembly required
    • Not many customer reviews
    • Does not have free shipping

    MCombo makes this strong and durable wooden cold frame that not only keep your plants safe and warm, they look great too. This greenhouse is more sturdy than others that use plastic sheeting as they use clear PVC sheets that are not as vulnerable to UV degradation. We also like that the center shelf is removable allowing you to baby taller plants like tomatoes.

    This cold frame features an opening top as well as front doors that swing open to allow heat to escape during the daytime hours.  Fir wood framing gives it a great look and this two-tiered greenhouse would look great in any porch or yard, and has plenty of room for seedlings and small plants.

    In the spring and fall, this cold crame could easily help you start or extend your growing season. It’s easy to assemble and comes with all the hardware you’ll need to put it together in under 30 minutes.

    Size: 29.9″L x 18.2″W x43.3″H

  3. 3. Best Mini Greenhouse: Gardman 4-Tier Mini Greenhouse

    Pros:
    • Very small footprint, great for porches or other small spaces
    • Tubular frame with polyethylene zipper cover
    • Easy to assemble with no tools required
    • Perfect for smaller porches and balconies
    Cons:
    • Requires some assembly
    • Not large enough for overwintering bigger plants
    • Plastic cover may become opaque over the years through exposure to UV rays

    This greenhouse from Gardman is simple, easy to set up and provides perfect coverage for seedlings, seeds, and young plants. It has four tiers of shelving and the size is perfect for a balcony, porch or small back yard – 27″ Long x 18″ Wide x 63″ High. This mini greenhouse is constructed of a tubular fit steel frame (no tools required for assembly) and a clear polyethylene cover to allow the maximum amount of sunlight in for your plants.

    he front door is zippered to keep wind and rain out, and rolls up for easy access. This greenhouse is also available with hassle-fee packaging and quick shipping from Amazon Prime. Get an even better deal when you buy two, and because of their size it’s pretty easy to accommodate both or you could give one as a gift.

    Size: 27″ x 18″ x 63″

    If you are considering giving a second greenhouse as a gift, add a potting bench to make it even more functional.

  4. 4. Quictent Portable Cloche Mini Greenhouse

    Pros:
    • Lightweight and sturdy to set over plants on the ground or patio
    • Transparent cover allows sun to get in while protecting plants
    • Two unzippable doors roll up to allow airflow
    Cons:
    • Doesn't include tiedowns or stakes for windy days
    • Cover tends to deteriorate in very arid climates
    • Some zipper breakage issues reported

    If you need a cloche style mini greenhouse to use directly in your garden, this model by Quictent is a great solution that will help you significantly extend your growing season. This cloche style kit has a bottomless design and a lightweight frame that makes it one of the best portable greenhouses. Cloche is French for bell, and that’s exactly how this little greenhouse kit fits – like a bell right over the top of your plants.

    The frame is made of high-quality powder-coated steel that will not rust, while the cover is a transparent PVC that lets in the maximum amount of UV rays and keeps out wind and rain. There are two zippered ventilation holes on top so that you can control the temperature and easily access your plants without having to remove the entire greenhouse.

    This greenhouse is very sturdy, and it is easy to set up with no tools required.

    Size: 71″ X 36″ X 36″

  5. 5. Gardman Raised Wooden Cold Frame

    Pros:
    • Durable solid wood timber fram construction
    • Twin wall polycarbonate panels allow for sun and warmth while protecting tender starts
    • Tall legs make for less bending and stooping
    • Lid props open to allow for sun and airflow on warm days
    Cons:
    • Lightweight so it feels somewhat tippy
    • Kit doesn't fit together perfectly and requires adjustment
    • Top has to be propped open

    If you’ve been wanting a cold frame to get seedlings or small plants off to a good start, this mini greenhouse is just ideal for lots of reasons. The solid timber frame walls of this cold frame feature twin wall polycarbonate construction, so it’s sturdy and can withstand being used outdoors. At 36 inches wide and 20 inches deep, this planter box can easily accommodate a number of small starts.

    The hinged lid can be propped open to allow for sunshine and air on warm days, while being left closed during the night and cool mornings to protect your baby plants. What you’ll love is the fact that this cold frame stands waist-high, so there’s no stooping and bending to reach your starts and check on their progress. 

  6. 6. VEIKOU Walk-in Greenhouse

    Pros:
    • Clear cover lets in the maximum amount of sunlight
    • Can be used indoors or outdoors
    • Lightweight and easy to assemble without the use of tools
    Cons:
    • Some reviewers had the zipper break
    • Some reviewers found the plastic cover not durable
    • May take some time to assembly

    This greenhouse is the perfect size for gardeners who want a walk in greenhouse that is still a manageable size and lightweight enough to move if needed. This greenhouse does not require any tools to assemble. It is constructed of easily connectible steel rods and twelve strong wire mesh shelves.

    The cover is a high-quality transparent PVC features a roll up front door design. It offers enough growing space for large size plants and easy access and ventilation and the greenhouse also comes with ropes to tie down the walls inside, which is important with such a lightweight structure.

    Constructed of rust resistant tubing, this greenhouse comes with eight shelves to accommodate enough plants for the average sized yard. 

    Size: 56 inches by 56 inches and stands 77 tall

  7. 7. Flower House FHSP300CL SpringHouse Greenhouse

    Pros:
    • Durable UV resistant Gro-Tech fabric creates ideal grwoing environment
    • Seriously fast and easy to set up
    • Double zippered doors and screened vents
    • Good for greenhouse newbies
    Cons:
    • Must be secured to the ground to avoid wind issues
    • Not a long term solution
    • Winter weather causes material to crack and split

    When you’re looking for ease of set-up in a greenhouse that’s actually quite spacious for the price, the Flower House pop-up greenhouse is a great find for anyone new to the greenhouse game. This easy pop up plant house can be set up on lawn, soil or hard surfaces during growing season, and then quickly cleaned and disassembled for the winter months as it’s definitely a seasonal choice.

    Made from durable,100% waterproof, UV resistant, rip stop, GRO-TEC material, it protects your plants from wind, frost, and snow, while being lightweight and compact for easy transport and storage. The doors and windows offer zippered screened vents for ample air circulation. While you’re deciding where to locate this greenhouse, consider where you can best protect it from high winds and select a spot with good drainage as well.

    To maximize planting space inside your portable greenhouse, you’ll want some plant shelves to allow plenty of vertical growth areas.

    Size: 72 inches x 72 inches by 78 inches in height

  8. 8. Palram Nature Series Mythos Hobby Greenhouse

    Pros:
    • Lightweight yet super sturdy aluminium frame
    • Rainwater catchment system is integrated into the frame
    • Comes with five year warranty
    Cons:
    • Assembly required
    • Side panels are not totally clear
    • Some reviewers had issues with the assembly instructions

    If you want something more permanent, but still not overwhelmingly large consider the Nature Series Mythos greenhouse from Palram. It is a versatile and highly rated greenhouse that comes in five different sizes. The smallest, six by four by seven feet, is still large enough to walk inside and even the largest size, eight by twelve by eight feet, can fit in a small to medium-sized yard easily.

    This greenhouse is constructed of super-durable 4mm thick twin-wall polycarbonate panels held together with a rust-resistant aluminum frame. The frame is very lightweight, but it is sturdy enough to be used even in snowy conditions. Assembly is easy with no special tools required, using a smart panel slide and lock system.

    Each greenhouse includes an adjustable roof vent window, a full-sized door with lockable handle and a magnetic door catch. There is also an integrated rain gutter system so that you can collect rainwater into a catchment system if you want.

    The base is made of galvanized steel for structural support. This greenhouse series is compatible with Palram’s greenhouse accessories line in order to maximize space efficiently, and each one comes with a five-year warranty as well as US-based customer support.

    Sizes: 6′ x 4′ x 7′, 6′ x 6′ x 7′, 6′ x 8′ x 7′, 6′ x 14′ x 7′, 8′ x 12′ x 8′

  9. 9. Palram HG6000 Oasis Greenhouse

    Pros:
    • Twin wall pitched ceiling protects plants from UV light damage
    • Durable polycarbonate walls
    • Powder coated frame
    • Double hinged door and louvered window for heat and humidity regulation
    Cons:
    • More expensive than other small greenhouses
    • Takes some time to assemble
    • Doesn't include shelves

    When you’re looking for a high-end greenhouse kit but you want one that’s moderately sized, the Palram Oasis greenhouse is an ideal option for the hobby gardener who likes to grow plants year-round as well as starts for the garden. This clever greenhouse features twin wall roof panels that block up to 99.9% of UV rays and crystal clear virtually unbreakable polycarbonate wall panels that provide 90% light transmission, which means your plants will prosper.

    It also has a wide double hinged door with a lockable door handle, although you’ll need to provide your own lock. A side louvered window allows for great air circulation and helps to regulate both temperature and humidity inside the greenhouse. The powder-coated frame is durable and rust and corrosion-resistant. The integrated gutter system allows for disbursement and collection of rainwater, so if you have a water catchment system like a rain barrel, it’s easy to channel a bit of mother nature’s bounty for use on your plants. 

    If you are shopping based on appearance as well as functionality, this little greenhouse is an absolute beauty. The pitched roof is simply stunning as well as allowing more headroom while you’re working inside.

    Size: 7 foot by 8 foot with a 9 foot roof

  10. 10. Rion Sun Room 2 Greenhouse

    Pros:
    • A more permanent option that can be used all year in warm climates
    • Easy to assemble but takes some time
    • Clear panels offer UV protection so plants don't burn
    • Roof vent and door
    Cons:
    • Shipping boxes are very heavy
    • Seams need caulking which isn't mentioned
    • Quite expensive

    This medium sized greenhouse comes in many sizes from six feet square up to eight by twenty feet, so if you need something on the larger side this could also work well for you. The Rion Sun Room is a three-sided structure that is meant to be installed on the outside of an existing building.

    This makes it perfect for small yards or even barn or garage extensions. The frame is designed to be extremely easy to assemble with slide-on locking joints. The clear panels are made of UV protected 3mm polycarbonate that protects against direct sunlight while still trapping heat and humidity.

    The roof panels are made of twin wall, 4mm thick polycarbonate for extra strength. Each greenhouse includes a roof vent as well as a hinged door for air circulation on hotter days.

    Sizes: 6′ x 6′, 6′ x 8′, 6′ x 10′, 6′ x 12′, 6′ x 14′, 8′ x 8′, 8′ x 10′, 8′ x 12′, 8′ x 14′, 8′ x 16′, 8′ x 18′, 8′ x 20′

  11. 11. Palram Four Season Chalet Hobby Greenhouse

    Pros:
    • Big 96 square foot growing space
    • Great light transmission while blocking UV rays
    • Beautiful and sturdy enough for cold weather climates
    Cons:
    • Quite expensive
    • Too large for smaller yards
    • Complex assembly

    This greenhouse from Palram is one of our favorites on this list because of its beautiful design. This greenhouse will add so much class and style to your yard. Instead of looking purely functional but seasonal like less expensive greenhouses sometimes tend to look, it’s gorgeous year-round. It’s also one of the best greenhouses for cold climates because it has solid panels instead of sheeting.

    This greenhouse is 12′ x 8′ x 9′ with 96 square feet of growing space inside so there is plenty of room for lots of plants as well as a table and chairs where you can relax any time of the year. In fact, you could even opt to get some raised garden boxes to place in the center for even more growing space.

    The frame is constructed of durable, sturdy double-walled aluminum which is rust-resistant. The sidewall panels are made of 3mm polycarbonate to let as much sunlight in as possible, while the roof is a thicker 4mm twin-wall polycarbonate. These panels provide over 90% light transmission, while at the same time blocking 99.9% of harmful UV rays.

    Each greenhouse also comes with anchoring kit, threshold ramp, two roof vents, galvanized steel base, lockable double-wide doors, and a five-year warranty.

  12. 12. DELTA Canopies High Tunnel Greenhouse

    Pros:
    • Huge growing space inside
    • Vented sides and dual zipper front and back doors
    • Galvanized steel frame is rust resistant
    • Easy to assemble
    Cons:
    • It isn't pretty like many greenhouses
    • Takes up a very large footprint
    • Doesn't include any racks for growing

    If you are looking for function rather than form, and want a really large greenhouse that is not incredibly expensive, then a high tunnel style greenhouse is perfect if you’ve got plenty of space. This greenhouse kit from Delta includes everything you need to set up a 33′ x 13′ x 7.5′ greenhouse in no time.

    This greenhouse is very durable, with a heavy-duty galvanized steel frame that’s rust-resistant, and a reinforced mesh polyethylene cover that retains and diffuses heat and moisture while blocking plants from harmful UVA and UVB rays. It has double zippered roll-up front and back doors and screened side vents that can be opened to allow for more airflow. 

    Easy to set up, this high tunnel comes with all the necessary hardware included as well as easy to follow instructions. Keep in mind, this high tunnel doesn’t include any interior structure for growing so you’ll need to purchase plant shelves separately. We like these three-tiered shelves as an option.

  13. 13. Greenhouse Garden Supply 16 Foot Geodesic Dome

    Pros:
    • Built to withstand even the harshest weather conditions
    • Thick marine poly covering
    • Looks clever and can handle year round use
    • Easy to assemble modular design
    Cons:
    • Expensive
    • Takes a couple of days to complete assembly
    • It's a permanent structure

    Geodesic domes not only look awesome in your yard, but they also make great greenhouse kits as well. The geodesic dome shape is designed to withstand extreme weather such as snow, high winds, severe storms, and even hurricane-force winds. The dome shape gives you more headspace and room for shelves and tall plants as well.

    This kit builds a 16 foot diameter dome that gives you 250 square feet of gardening space and stands 10 feet tall in the center. The frame is made of half-inch galvanized steel and can be assembled in just a few hours. You might also appreciate that the kit is made in the USA and comes with a lifetime warranty.

    The manufacturer, Greenhouse Garden Supply, also offers a dome upgrade program where you can upgrade to a larger dome for a reduced price. Included in every kit is a steel frame with bolts and a Poly Marine Cover at 7mm thickness, along with a galvanized steel frame doorway.

    Size: 16 foot diameter x 10 feet tall

  14. 14. Palram Balance Hobby Greenhouse

    Pros:
    • This big greenhouse offers 128 square feet of growing space
    • Clear polycarbonate panels are virtually indestructible
    • Easily to assemble
    • Includes three roof vents and an integrated gutter system
    Cons:
    • Requires a strong flat foundation
    • Takes some time to assemble
    • More expensive than others

    This greenhouse from Palram is among those at the top of the line when it comes to quality and size, and it also has the added benefit of being incredibly easy to assemble. With large greenhouses, assembly is a big deal and you don’t want to have to spend days putting together your greenhouse. You especially don’t want to also have to purchase any specialized tools or have to pay someone thousands to install it for you.

    The name of this greenhouse model says it all – the Balance hobby greenhouse it offers the best of growing conditions for the hobby gardener. The 4mm twin wall roof panels block up to 99.9% of UV rays and crystal clear virtually unbreakable polycarbonate panels that provide 90% light transmission. The panels are made with virgin materials to prevent UV degradation and discoloration. The aluminum frame is also corrosion resistant.

    This kit includes three adjustable roof vents, integrated rain gutters, lockable door handle and galvanized steel base for structural support This greenhouse is even large enough to put a small bistro set in to enjoy your plantings as well as to give you a work surface while you’re trimming and pinching back starts to give them a more robust start.

    Size: 8′ X 16′ X 7.5′ 

     

  15. 15. Little Cottage Company 8×12 Foot Colonial Gable Greenhouse

    Pros:
    • Adorable as a greenhouse but doubles as a she shed
    • Wooden plant shelves inside
    • Real windows and a dutch door
    • Solid wood construction with clear roof and floor to ceiling windows
    Cons:
    • It's seriously spendy
    • A real construction project
    • Assembly instructions are poor

    Is this the year you plan to seriously splurge on a greenhouse that takes gardening to a whole new level? If you answered a resounding “yes!” we want you to consider getting this colonial style greenhouse – aka. she shed. Sure, it’s a little on the pricey side, but this cutie comes with everything you’ll need to start plants for the garden, and then you can transform it into your own private outdoor oasis.

    It comes complete with windows, an adorable dutch door, internal wooden plant benches, and a clear corrugated roof to bring in lots of sun. At 8 by 12 feet, you won’t need a ton of space to place it, but if space and cost aren’t issues, you can order this greenhouse as large as 10 by 16 feet. If you’re not even trying to pretend you’re getting a greenhouse, make sure to add some garden furniture for the inside, along with a few starts.

    This greenhouse kit comes with all you’ll need to build but you will want a solid surface base to place it on.

Historically,  greenhouses were constructed of wood or metal frames with glass panels. While these structures were beautiful and functional, they were not only extremely expensive, but they were also vulnerable to severe weather conditions like hail or very strong winds.

Many of the greenhouse kits we've included here are more functional for those who live in apartments or have smaller yards, although we've included a few larger models for those who have spacious yards or even acreage.

Gardening is also a great pastime for kids that comes with plenty of benefits according to this article from Macaroni Kid. Why not get them started this year?

Get them a couple of hammock chairs to study on the patio and they can take breaks tending their baby plants in their greenhouse before transplanting them outside.

Why Would You Select a Small or Mini Greenhouse?

Small greenhouses are perfect for anyone who has a small yard, patio, deck or balcony. A mini greenhouse allows you to start seeds outdoors and overwinter plants without taking up space inside of your house.

There are also smaller cold frames that you can place directly on top of planter boxes or garden beds to start your growing season off early.

Is a Medium Sized Greenhouse Big Enough for a Family?

The medium-sized greenhouses in this list are the perfect compromise for gardeners who want a walk-in greenhouse but don't have a lot of space to commit to a full-sized building. These greenhouses include lightweight, portable versions as well as more permanent models that can remain stationary or even add on to an existing building.

Prices vary, but even if you are on a budget you can get a sizeable growing space to easily meet your produce needs for a family of four to six.

Which Are the Best Large Greenhouse Kits?

If you have a large yard or live out in the country with plenty of space for a big garden, your greenhouse needs are likely more than can fit in the smaller models listed above. Large greenhouses expand the possibilities of your garden exponentially, allowing you to grow just about anything.

You can not only start seeds, but have entire gardens inside of your greenhouse where you can grow your favorite plants from seed to harvest, even when it is cold outside. Large greenhouses do not have to be super complex or expensive, either.

Prices start at only a few hundred dollars for simple plastic-covered high tunnel style greenhouses. (Think of the Kilchers on Alaska the Last Frontier.) If you want something more sturdy and permanent, we have also included kits for full-sized greenhouses below.

And, if you're concerned about the best way to start seeds in a greenhouse, this primer from SF Gate has everything you need to know.

See Also:

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