Sungrow 20

Sungrow 20

Rated 4.9 out of 5 stars
87 Reviews

Approx Size: 10' × 19.5' × 8'

Picture the tree fort from your childhood hidden in your own backyard. A vibrant garden filled with lush greenery and new life. A cocoon where plants soar indoors regardless of the weather outdoors.

Explore your creative side with a Planta Sungrow Greenhouse.


One of the strongest greenhouses in the world: heavy-duty materials, more weather-resistant, and with a decade-long warranty.

  • New door window handles and metal trims
  • Comes with two doors (one at each end).
  • Wind resistant up to 65 mph for those living in gusty climates.
  • Withstands a snow load (light snow) of up to 6 feet (75 psf), and 3 feet of packed snow making it perfect for areas with harsh winters.
  • Made with a heavy-duty galvanized steel frame and 6 mm double-wall polycarbonate panels.
  • Bell-shaped design - the wind, snow, and hail just slide off the sides.
  • Extendable beyond 100ft - so you can expand your greenhouse when you're ready.
  • Maintenance-free means more time to focus on your garden.
  • 10-year warranty because our greenhouse is undeniably durable.
  • Access to our closed Facebook group to connect with and learn from other greenhouse owners.
Regular price $3,850 CAD
Regular price $4,150 CAD Save $300 Sale Sale price $3,850 CAD
Sold out

Have questions? Call us 1-877-669-1286
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About Sungrow 20

The Planta Sungrow 20 was designed with the backyard farmer in mind. The quality materials allow for 3 or 4 season gardening of beautiful flowers, delicious fruits, and vegetables in most areas. Not to mention, the attractive and sleek design adds a stunning element to your backyard.

Exact size: 118.1 x 94.5 x 238.56 inches

The reliable rust-resistant steel frame is strong enough to withstand the most extreme climates, regardless of where you may live. So feel confident knowing that your garden will continue to thrive in a safe and solid environment that will stay standing for years to come.

Snow Load Up To 75 psf (360 kg / m²)
75 psf (360 kg / m²) is equal to 6 feet fresh snow layer or 3 feet packed snow layer and is maintenance free in the winter the winter More About PSF
Wind Resistant up to 65 mph (100 km/h)
Sturdy greenhouse construction that resists winds up to 65 mph (100 km/h)
Extendable & Customizable
This greenhouse can be extended with additional expansion kits
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Rated 4.9 out of 5 stars
Based on 87 reviews
Total 5 star reviews: 79 Total 4 star reviews: 4 Total 3 star reviews: 4 Total 2 star reviews: 0 Total 1 star reviews: 0
95%would recommend this product
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87 reviews
  • TW Profile picture for Tanya W.
    Tanya W.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Sun grow 20

    We are currently just building ours. I wanted to mention the great customer service Gerry provided walking me through the purchase. It was appreciated greatly! Thank you Gerry!!

    Tanya Waters

    PG Profile picture for Planta Greenhouses Canada
    Planta Greenhouses Canada
    4 days ago

    Thank you for the shout-out! If you need any further assistance as you build, don't hesitate to reach out. Happy gardening!

  • SA
    Susan A.
    Verified Reviewer
    I recommend this product
    Location British Columbia
    Rated 5 out of 5 stars
    2 weeks ago
    Holds up to Canadian winters

    Love Love Love it , when I do t grow in it it’s my she shed. It holds up to cold and deep deep snow. Just remember keep the snow on the sides clean , you don’t want it to ice up and crack any poly.

    PG Profile picture for Planta Greenhouses Canada
    Planta Greenhouses Canada
    1 week ago

    Hey Susan,

    Thanks for your awesome review. We're glad you're loving it! 🌨️❄️

  • TK Profile picture for Tyler logo
    Tyler K.
    Verified Buyer
    Location North Carolina
    Rated 3 out of 5 stars
    3 months ago
    I give this 3 stars for some reasons

    It took a while to set everything up and the book instructions were very unhelpful. Thank god they have the video reference that helped a lot in conjunction with the book.

    Depending on what you plan to build inside also with any water or electrical and the foundations and if you want it waterproof that’s on you as well. You will end up spending well over the price for the greenhouse which is understandable. I’m not an engineer, but I feel like more thought and effort could have been out into the kit for installation ease and waterproofing.

    Rubber washers on the outside could be beneficial, should come with a tube of good quality silicon. Honestly I believe the automatic roof vent should just be thrown into this kit as a kind gesture.

    I would have been much more content with everything if it did.

    It’s not like I wouldn’t recommend this product but I would be honest to people about it.

    It’s should definitely be more clear that this is NOT waterproof and will leak tremendously on a heavy rains.

    I’ve taken many steps to decrease it and I think after useing some Zip tape along the horizontal brackets outside I might stop it for good.

    Customer service was good to every time I needed to call somebody answered so that’s a big plus

    Not a bad product but really think it could be better. And if I did buy another one I would need a sweeter deal with it lol

    PG Profile picture for Planta Greenhouses Canada
    Planta Greenhouses Canada
    3 months ago

    Hi Tyler,
    Thank you for sharing your feedback. We appreciate your honesty and will consider your suggestions for improvement. If you have further concerns or questions, feel free to reach out to

  • PK
    Patti K.
    Verified Buyer
    I recommend this product
    Location Wisconsin
    Rated 5 out of 5 stars
    8 months ago
    Quality greenhouse

    We definitely chose the Planta Sungrow 20 for its strength. We get a lot of snow in northern WI and that was a concern. We can see by the design, how snow will not accumulate. We have only had our greenhouse 5 months and are loving it! Looking forward to supplying friends and family with fresh tomatoes and broccoli in Oct/Nov! Lots of relaxation and contemplation in this space :)

    PG Profile picture for Planta Greenhouses Canada
    Planta Greenhouses Canada
    7 months ago

    Thanks for your wonderful review! 🌟

    We're thrilled to hear that you chose the Planta for its strength, especially considering the snowy conditions in northern WI. It's great that you've been enjoying your greenhouse for the past 5 months, and we can't wait to see those fresh tomatoes and broccoli in Oct/Nov! 😊 Your pictures look fantastic too! 📸🌱🍅

  • LB
    Linda B.
    Verified Buyer
    I recommend this product
    Location New Mexico
    Rated 5 out of 5 stars
    8 months ago
    Love my greenhouse

    I love it.

    PG Profile picture for Planta Greenhouses Canada
    Planta Greenhouses Canada
    7 months ago

    Thank you for sharing your love for your greenhouse which looks fantastic in those pics! 😍 📸🌿🌼

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Sungrow 20 ships in these boxes:

  L, (in) W, (in) H, (in) Weight,(lbs) Quantity
Planta Base 1 62 11 3 46 1
Planta Base 2 50 15 3 73 1
Planta Base 3 40 5 3 44 1
Planta Polycarbonate base 83 44 3 40 1
Planta Extension 62 11 3 79 2
Planta Polycarbonate Extension 83 44 2 20 2

Greenhouses are amazing products, and they require special shipping and handling. That is the reason, we have been working diligently over the past year to secure preferential shipping rates for our customers. Most shipments across Canada and the US are between $250 and $450. 

  • We will contact you to confirm shipping price, based on your location and order size.
  • Shipping on most residential greenhouse orders is between $250 and $450, customers in remote areas may need to pay extra.
  • When you place your order, please make sure to enter the correct Phone and Address at checkout. You will be contacted by phone before the item is shipped. We cannot be responsible for deliveries to incorrect addresses.
  • As part of the delivery process, we require a contactable telephone number (for the courier company to contact you) before the item is shipped.
  • White glove delivery service isn't available. The greenhouse components are delivered in multiple boxes, the largest of which weighs 80lbs. The greenhouse will be delivered to your driveway. Please make arrangements to have the package moved to its installation location. 
  • We do not ship to PO Boxes, as in most cases you will need to sign for your item.  
  • Orders placed on weekends or public holidays will not begin processing until the next business day.