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Approx Size: 10' × 19.5' × 7'
Imagine a garden filled with life yet untouched by time. A space where you can harvest heat-loving vegetables while a piercing winter storm is raging outside the door. A stable environment where vine-ripe tomatoes and succulent strawberries will thrive. A lovely quiet space to spend away from work, kids, and the chores of life.
Strong and spacious: long-lasting construction, weather-resistant materials, and roomy design.
The Planta Sigma 20 is an urban gardener's dream come true. The quality heat-capturing materials allow for 3 or 4 season gardening, meaning you'll be able to harvest delicious fruits and vegetables beyond the outdoor growing season. Additionally, the rounded design is incredibly spacious, giving you the room to make the most out of your backyard garden.
Feel confident knowing that the rust-resistant galvanized pipe frame is tough enough to withstand a variety of severe weather conditions – keeping your garden safe and sound throughout the year.
The greenhouse comes with:
The Sigma 20 greenhouse is extremely pleasant to work in throughout the day due to the end-to-end airflow and the distinctive 7ft roof height.
We are loving the greenhouse. Thank you!
Took about 7 days with 2 people to build, that’s with the learning curve and building up a level foundation.
We chose to dig the holes and bury the legs instead of putting on concrete or 6x6’s.
The panels had dust left inside them from the cuts from the factory and we used an air hose to remove the dust inside the panels before taping the ends. No big deal.
It’s up and growing!
Thank You, it’s a great purchase.
Great pictures! Your insights into the assembly process and innovative approach to foundation building are appreciated. If you ever need assistance or have more feedback, feel free to reach out. Happy growing 🌱🏡
The greenhouse itself seems to be of decent quality. My only complaints are we were shorted a large number of bolts, that coupled with the difficult assembly and poor instructions is why I gave it 3 stars.
Hi Tammy,
Thanks for sharing your feedback! 🌿 We've taken these comments seriously and after a year of hard work, we've digitized our instructions for a smoother assembly experience: https://www.youtube.com/watch?v=lZRE1g8YSsw
If you ever need further assistance, please don't hesitate to contact our customer service at info@plantagreenhouses.com 🌻
The only issues I had were some ambiguity in the assembly diagrams. We wanted some additional internal height so we mounted it with raised foundation. Overall very pleased. Still need to fine tune the fit between the door and the window.
Thank you for your feedback. We're working on improving our instructions for a better experience. If you have any questions or need help with the door and window fit, please email us at info@plantagreenhouses.com. Enjoy your greenhouse!
It is an awesome greenhouse. I'm giving it 4 stars only because the instructions were hard to understand. I would also recommend having more than 2 people to help you build it.
We haven't gotten bad weather yet where I'm at. So im giving that ranking a 3 for right now.
Thank you for your fantastic feedback and for choosing our greenhouse! 🌿 We appreciate your honest input about the instructions and the need for additional help during assembly. Your insights are valuable to us as we continue to improve.
We hope your greenhouse serves you well and provides a fantastic gardening experience. 🌱🏡😊
It is great for growing peppers and cucumbers in the summer with a shade cloth added to keep the temperature from getting out of hand. I like it so far
Hi Jonathan,
Thank you for sharing your positive experience. We're glad to hear that your Sigma 20 is working well for your pepper and cucumber growing needs. Happy gardening! 🌶️🥒😊
| L, (in) | W, (in) | H, (in) | Weight, (lbs) | Quantity | |
| Sigma Base 1 | 80 | 11 | 4 | 93 | 1 |
| Sigma Base 2 | 78 | 24 | 3 | 93 | 1 |
| Sigma Polycarbonate Base | 82 | 44 | 4 | 58 | 1 |
| Sigma Extension | 78 | 21 | 3 | 63 | 1 |
| Sigma Polycarbonate Extension | 82 | 44 | 2 | 31 | 2 |
| Total weight: | 338 |
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:
