Sungrow 26 (Gen III)

Sungrow 26 (Gen III)

Approx Size: 10' × 26' × 8'

Imagine stepping into a thriving garden long after summer has ended, with plenty of room to grow fresh vegetables, vibrant flowers, and your favorite plants throughout the changing seasons. The Sungrow 26 (Gen III) builds on one of Planta's most popular greenhouse designs with a stronger structure, upgraded doors, improved anchoring options, and enhanced snow resistance. With approximately 260 sq. ft. of growing space, it's built for gardeners who want a spacious and dependable greenhouse for serious growing.

Features

One of our strongest residential greenhouses, upgraded for even greater durability and year-round growing.

  • Reinforced Steel Frame [NEW] – Upgraded heavy-duty hot-dip galvanized steel profiles provide increased strength and stability.
  • Upgraded Split Doors [NEW] – New aluminum-framed split doors at both ends provide improved durability, with upper sections that open separately for convenient ventilation and integrated locks for secure closure.
  • More Flexible Polycarbonate [NEW] – Updated polycarbonate material is softer and easier to handle during installation while maintaining high quality, functionality, and durability.
  • Improved Polycarbonate Installation [NEW] – Large polycarbonate sheets mount outside the frame for increased structural strength and reduced thermal bridging, while pre-cut end panels help simplify installation.
  • Flexible Anchoring System [NEW] – Anchor directly into suitable ground with the included ground anchors or secure the greenhouse to your own foundation with the included angle brackets.
  • 75 psf (360 kg/m²) snow load – Equal to approximately 6 feet of fresh snow or 3 feet of packed snow for dependable winter performance.
  • Wind resistant up to 60 mph (97 km/h) when properly installed and securely anchored.
  • 6 mm UV-protected polycarbonate panels provide a durable covering designed for long-term greenhouse use.
  • Bell-shaped design helps wind, snow, and hail move around and off the greenhouse.
  • Two-door access provides convenient entry from both ends and helps improve end-to-end ventilation.
  • Extendable design allows you to expand your greenhouse as your growing needs change.
  • 10-year warranty provides added confidence and long-term peace of mind.
  • Private Facebook group access connects you with thousands of Planta greenhouse owners to share advice, growing tips, and inspiration.
Preorder now - Shipping second half of September
Regular price $5,100 USD
Regular price $5,500 USD Save $400 Sale Sale price $5,100 USD
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About Sungrow 26 (Gen III)

We reimagined backyard growing with the Planta Sungrow collection. Now, Gen III takes the proven Sungrow design even further, introducing structural and installation upgrades while preserving the spacious interior and distinctive bell-shaped profile growers love.

Exact size: 118.1 x 92.9 x 317.4 inches

With approximately 260 sq. ft. of growing space and a nearly 8 ft roof height, the Sungrow 26 gives you plenty of room for raised beds, shelving, tall-growing plants, and comfortable movement throughout the greenhouse.

The greenhouse comes with:

  • two doors, one at each end
  • integrated ventilation through the split-door design
  • the option to install additional greenhouse ventilation accessories

The upgraded Gen III frame uses reinforced hot-dip galvanized steel profiles for increased strength and stability. Combined with the greenhouse's distinctive bell-shaped profile, the structure is designed to stand up to demanding weather while providing a protected environment for your plants.

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    Snow Load Up To 75 psf (360 kg/m²)

    75 psf (360 kg/m²) is equal to approximately 6 feet of fresh snow or 3.3 feet of packed snow and is maintenance-free in the winter.

    More About PSF

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    Wind Resistant up to 60 mph (97 km/h)
    Sturdy greenhouse construction that resists winds up to 60 mph (97 km/h)
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    Extendable & Customizable
    This greenhouse can be extended with additional expansion kits
     
    Have questions about this product?
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    4.8
    Rated 4.8 out of 5 stars
    Based on 405 reviews
    97%would recommend these products
    Slide 1 selected
    QualityRated 4.8 on a scale of 1 to 5
    DurabilityRated 4.8 on a scale of 1 to 5
    Wind and Snow ResistanceRated 4.6 on a scale of 1 to 5
    InsulationRated 4.0 on a scale of 1 to 5
    InstallationRated 3.6 on a scale of 1 to 5
    Customer ServiceRated 4.7 on a scale of 1 to 5
    Powered by OkendoOpen Okendo Reviews in a new window
    405 reviews
    • CP
      Chris P.
      Verified Buyer
      Reviewing
      Sungrow Urban (Gen III)
      I recommend this product
      Rated 5 out of 5 stars
      3 months ago
      Planta Urban

      I purchased this greenhouse last spring and assembled it by myself. There are lots of nuts and bolts and it would help to have a second set of hands. Slow and steady is the trick. The final result was excellent and I had a successful summer. This past winter we had over 10 feet of snow that was collapsing roofs in the Barrie, Stayner area. The design and construction of the Planta greenhouse withstood a heavy snow load and I’ve been harvesting herbs and greens since March. I highly recommend this product.

      Chris

      PG Profile picture for Planta Greenhouses
      Planta Greenhouses
      3 months ago

      Thank you so much, Chris! We're absolutely thrilled to hear that your Sungrow Urban has been such a fantastic investment and that you successfully tackled the assembly solo.

      What's truly impressive is how your greenhouse weathered that extreme winter with over 10 feet of snow in the Barrie-Stayner area - especially when other roofs were collapsing! That kind of performance under such harsh conditions really showcases the strength and durability of our design and construction. We're so proud to hear it stood up to that incredible snow load.

      Thank you for choosing Planta and for sharing such encouraging feedback about your experience with the Sungrow Urban through all seasons!

    • JL Profile picture for Jim L.
      Jim L.
      Verified Buyer
      Reviewing
      Sungrow 20 (Gen III)
      I recommend this product
      Location Washington
      Rated 5 out of 5 stars
      4 months ago
      Well designed for DIY

      Going on the 4th season. It has held up well to our harsh winters and windy conditions in Eastern Wasington State. Assembly is not difficult. The YouTube videos are very helpful. I was able to run power and water to the selected site. The stamped holes lined up perfectly for screws. LOTS OF SCREWS/BOLTS! I had a few things I had to redo because I initially put together incorrectly. Once you get the process down using the videos for step by step "how to" it goes well. A quality product worth the time invested to complete. Once the site is prepped the way desired, 2 fairly handy people can get this put together and ready to use in 3 days. A kid or 2 for "go fer" etc. is helpful.

      PG Profile picture for Planta Greenhouses
      Planta Greenhouses
      3 months ago

      Thank you so much, Jim! We're absolutely thrilled to hear that your Sungrow 20 has been holding up so beautifully through four seasons of harsh Eastern Washington winters and windy conditions - that durability is exactly what we strive for!

      Your experience perfectly captures what makes our greenhouses so special for DIY builders. We love that you found the YouTube videos helpful for getting through those step-by-step details. It sounds like you really got the hang of the process, and we're glad those stamped holes lined up perfectly for you. Don't worry about having to redo a few things initially - that's all part of the learning curve, and it's clear your attention to detail and persistence paid off in the end.

      Thank you for choosing Planta and for sharing such detailed feedback about your four-season journey with the Sungrow 20!

    • W Profile picture for Wendy
      Wendy
      Reviewing
      Sungrow Urban (Gen III)
      I recommend this product
      Rated 5 out of 5 stars
      4 months ago
      Best investment we could have made!

      Going on three years now for our 10 x 13 , growing produce, herbs and fruit trees in my SUNGROW. I wish I bought one years ago. So grateful I made the leap. Anyone who wants to grow beautiful plants need to buy one. So strong, through winters, strong winds, high temperatures and EXTREME SUN, our Greeny is like new! The panels are clear and the compliments we receive makes me very proud. Heated all winter our produce is so tasty all year. The plants just love it, the Govee lights rock her, the look is so pleasing to look at. Worth every dollar and thinking about adding on, we love it so much ❤️Customer service is A + Always there to answer any questions you have, and super nice. This addition into our Windsor Ontario property is the best decision we ever made. Make it yours too.....

      PG Profile picture for Planta Greenhouses
      Planta Greenhouses
      4 months ago

      Thank you so much, Wendy! We're absolutely delighted to hear that your Sungrow Urban has been such an incredible investment for you over these past three years! Your setup sounds absolutely fantastic with the year-round heating and those Govee lights - no wonder your plants are thriving and producing such tasty produce, herbs, and fruit trees! It's clear you've created something truly special that brings you joy every time you look at it, and we love hearing about all the compliments you receive from visitors. It's amazing how well your 10x13 has held up through all those Canadian winters, strong winds, high temperatures, and extreme sun - that durability and crystal-clear panel quality is exactly what we strive for!

      Your kind words about our customer service team mean the world to us - they'll be thrilled to hear how much you appreciate their support. And how exciting that you're thinking about adding on - that's the ultimate compliment! Thank you for choosing Planta and for sharing such an enthusiastic review.

    • WE Profile picture for Wendy E.google logo
      Wendy E.
      Verified Reviewer
      Reviewing
      Sungrow Compact (Gen III)
      I recommend this product
      Rated 5 out of 5 stars
      4 months ago
      Best investment in my lifetime!

      Going on three years now growing produce, herbs and fruit trees in my SUNGROW. I wish I bought one years ago. So grateful I made the leap. Anyone who wants to grow beautiful plants need to buy one. So strong, through winters, strong winds, high temperatures and EXTREME SUN, our Greeny is like new! The panels are clear and the compliments we receive makes me very proud. Heated all winter our produce is so tasty all year. The plants just love it, the Govee lights rock her, the look is so pleasing to look at. Worth every dollar and thinking about adding on, we love it so much ❤️Customer service is A + Always there to answer any questions you have, and super nice. This addition into our Windsor Ontario property is the best decision we ever made. Make it yours too.....

      PG Profile picture for Planta Greenhouses
      Planta Greenhouses
      4 months ago

      Thank you so much, Wendy! We're absolutely delighted to hear that your Sungrow Compact has been such an incredible investment for you over these past three years! It's wonderful that "Greeny" has become such a beloved part of your Windsor Ontario property - what a perfect name for your greenhouse!

      Your setup sounds absolutely fantastic with the year-round heating and those Govee lights - no wonder your plants are thriving and producing such tasty produce, herbs, and fruit trees! It's clear you've created something truly special that brings you joy every time you look at it, and we love hearing about all the compliments you receive from visitors.

      Thank you for choosing Planta and for sharing such an enthusiastic review about your three-year journey with the Sungrow Compact. Here's to many more years of successful growing in your beloved Greeny!

    • T
      Tracy
      Verified Reviewer
      Reviewing
      Sungrow 20 (Gen III)
      I recommend this product
      Location North Carolina
      Rated 5 out of 5 stars
      4 months ago
      Love our Sungrow!

      Our Sungrow 20 went up a week ago with help from a Planta certified installer, and we’re super impressed with the quality of the greenhouse and with the installation. Still lots to do before planting, but we’re getting closer!

      PG Profile picture for Planta Greenhouses
      Planta Greenhouses
      4 months ago

      Thank you so much, Tracy! We're absolutely thrilled to hear that your Sungrow 20 went up so smoothly and that you're impressed with both the quality and the installation work. It's wonderful that you chose to work with one of our certified installers - they really know how to get everything set up just right!

      We highly recommend joining our Facebook Community if you haven't already. It is a wonderful platform for novices to experienced Planta Greenhouse owners to share information. We have over 5000 members who share their ideas, DIYs, pictures, etc.

      https://www.facebook.com/groups/plantagreenhousescommunity

      Thank you for choosing Planta and for sharing your positive experience with the installation process. Here's to all the wonderful growing adventures ahead in your new Sungrow 20!

    Videos

    Shipping

    Sungrow 26 ships in these boxes:

      L, (in) W, (in) H, (in) Weight,(lbs) Quantity
    Planta Base 1 63 12 3 49 1
    Planta Base 2 51 16 3 75 1
    Planta Base 3 41 6 3 33 1
    Planta Polycarbonate base 82 44 4 58 1
    Planta Extension 63 12 3 74 3
    Planta Polycarbonate Extension 82 44 2 31 3
          Total weight: 530  

    Planta Greenhouses is dedicated to deliver your order promptly, so you can begin using your greenhouse products right away.

    Because greenhouses are packaged in large boxes, they have unique shipping requirements, including: 

    • We will contact you to confirm shipping price, based on your location and order size.
    • Shipping on most orders is between $250 and $450. Deliveries to remote areas may cost 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.
    • We will make every effort to ship your order in the fastest possible manner, and by the mode of transportation that you specify; however, in the event of no specific instructions, we will use our judgment and ship the best, fastest and most economical way. We are not responsible for delayed delivery due to conditions beyond our control.
    • We do not ship to PO Boxes, as in most cases you will need to sign for your item. 
    • 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. 
    • Orders placed on weekends and public holidays will be processed the next business day.

    FAQ

    Residential Greenhouses

    Are there doors on both ends of the greenhouse?

    Yes! All of our Sungrow models come with manual doors and a manual window above the door on both ends of the greenhouse.

    Do you have lean-to greenhouses?

    Unfortunately, we do not have any lean-to greenhouses available at this time.

    Do you make custom size greenhouses?

    All of our products come pre-packaged by the manufacturer and can only be customized in length (6.5' extension). However, the height of the greenhouse can also be increased if placed on a base (up to 5ft above the ground)

    How is the greenhouse anchored to the ground?

    Every greenhouse kit comes with optional legs that can be dug directly into the ground. The amount of legs included depends on the greenhouse size.

    What is the frame made of?

    The greenhouse frame is made out of heavy-duty galvanized steel.

    What polycarbonate panels are used for residential greenhouses?

    We use 6mm heavy-duty, double-walled polycarbonate panels with a UV-protected outside layer for our Residential Greenhouses.

    What type of base/foundation is the best for me?

    There are several different types of greenhouse bases, information, and pictures posted by our customers on our Customer Stories page and our Planta Facebook page. Additionally, you can learn more about "Types of Greenhouse Bases - With Pros & Cons of Each" on our blog.

    Roof Ventilation Windows

    Can I add windows for my greenhouse later?

    Roof ventilation windows work as an add-on and can be installed only once the greenhouse installation is complete. Windows can be added later as well.

    How do the Automatic Ventilation Windows work?

    Our Automatic Ventilation Windows do not require any batteries or electricity. A heat-activated mechanism will open/close the window once a certain temperature is reached.

    How many roof ventilation windows are recommended for the greenhouse?

    It is strongly recommended to go with an even amount of roof ventilation windows. This is so you can place at least one on either side of the greenhouse. The amount of windows required depends on the greenhouse size, the climate you are in, and the types of plants that will be grown inside the greenhouse.

    What are the opening and maximum opening temperatures for the Automatic Windows?

    The opening temperature is between 17 °C and 25°C (62.6°F to 77°F), while the maximum opening is at 30 °C (86°F).

    Sungrow Greenhouses

    What is the snow load on the Sungrow models?

    The Sungrow models can hold snow load weight of up to 6ft of fresh snow (75 psf or 360 kg / m2) on top of the greenhouse.

    What is the width of the door opening?

    For our Sungrow models, the door opening width is 800mm or 31.5".

    What is the wind resistance on the Sungrow models?

    The wind resistance is 100km/h (65 mp/h).

    Installation

    Is there support after purchase?

    Absolutely! Our after-sales customer service team is available to answer any questions and support you on your greenhouse journey. You can fill out our contact form or give us a call at 1 (877) 669-1286.

    What resources are available to assist with greenhouse installation?

    We offer several resources to help you with the installation process:

    1. Bilt App: Downloadable on the Apple Store and Google Play, it provides digitized step-by-step instructions.
    2. YouTube videos: A series of detailed video tutorials to guide you through the installation process.
    3. Printed Manual: Comes included with your greenhouse.
    4. Blog: Explore our blog for valuable insights such as "Expert Advice: 9 Tips For Installing Sungrow Greenhouses With Ease!"
    5. Customer-Only Facebook Group: Connect with other customers for valuable installation tips.

    If you still need assistance, our customer service is ready to help via phone or email.

    What type of base/foundation is the best for me?

    This can vary depending on your location, gardening plans, and desired aesthetic. To better understand the different options available, you can find several different types of greenhouse bases, information, and pictures posted by Planta Greenhouse owners on our Customer Stories page and our Planta Facebook page. Additionally, you can learn more about it on our Greenhouse Bases blog.

    Customization Options

    Can I add my own vents, fans, heaters, and lights?

    Of course! The polycarbonate is very easy to work with, and the galvanized steel frame is strong enough to support any additional accessories.

    Can I get a longer greenhouse?

    Most of our residential and commercial greenhouses are extendable up to 100ft. Learn more about our extension kits for both the Sungrow and Sigma models.

    How can I customize my greenhouse?

    The customization possibilities are truly endless with a Planta Greenhouse. To help you get started, take a look through “16 Ways to Supercharge Your Greenhouse” on our blog. 

    Is hanging plants, heaters, and hammocks safe from my greenhouse frame? How much weight does it handle without affecting the guarantee?

    It is safe to hang plants and accessories on a Sungrow greenhouse since each internal reinforcement arch can withstand up to 100 lbs/45.3 Kg. On the Sigma series, you can pre-drill the holes on the framing and hang small things. We would not suggest hanging anything heavier than 5 – 10 lbs / 2.2 – 4.5 Kg per arch.

    May I heat my greenhouse with fire pits or similar?

    You can use any heating source inside, like electricity, gas, propane, and even wood. It may be tricky to heat with wood, as you want to ensure that you keep the stove/pit away from the panels to prevent them from melting or burning if they are too close to the fire source. In this case, the customers ideally would want to come up with an exhaust system, making sure it’s not in contact with the panels, for being a flammable material.