Approx Size: 10' × 32' × 7'
Picture a space in your own backyard that always feels perfect inside, no matter what the weather is like. A garden where gusty winds and icy snow can't affect even the most delicate of plants. A place bursting with new life year-round. A zen-like oasis where you can calmly start your day in the warmth and quiet.Strong and spacious: long-lasting construction, weather-resistant materials, and roomy design.
Have questions? Call us 1-877-669-1286
Take backyard farming to the next level with the Planta Sigma 32 (Gen III). This greenhouse was designed with heavy-duty materials that promote 3 or 4 seasons of growing, allowing for multiple harvests every year. In addition, the innovative engineering and tough construction we use means you can harness the power of a commercial greenhouse in an attractive backyard design.
Exact size: 118.1 x 83.9 x 394.5 inches
The end-to-end airflow, spacious size, and high 7' ( 2.13-metre) roof height make this a comfortable place to garden throughout the day.
The greenhouse comes with:
The galvanized pipe frame is both rust-resistant and durable. In addition, the construction can withstand moderate to extreme weather conditions, ensuring your garden will stay safe and flourish throughout the seasons.
We love our sigma greenhouse, it has kept our garden going during this winter. We installed a wood stove inside it! and the pipe did not destroy the poli! We are super happy with this greenhouse, we are planning on expanding it or buying a bigger one. I highly recommend this greenhouse, money very well invested! We live in Idaho for reference.
Thank you so much, Diana! We're thrilled to hear how well your Sigma 32 is performing through the Idaho winter. It's fantastic that you were able to install a wood stove and that the poly held up beautifully. Your experience keeping the garden going through winter is incredibly valuable feedback and will be so helpful for other growers in similar climates.
Thank you for the wonderful recommendation and for sharing how well your investment has paid off. Here's to many more successful growing seasons ahead!
I absolutely love my Planta greenhouse! I own a small nursery, and we use the greenhouse to grow flats of vegetable plants, herbs, flowers, hanging baskets, and to overwinter tropical fruits like banana, lemon, and lime trees.
The greenhouse has allowed me to grow my own plants for the nursery, which saves me a lot of money compared to buying from wholesalers. I also get a jump on my competition by getting my plants ready sooner. I heat the greenhouse with an 18k BTU propane heater, and even at its lowest setting, it stays at 63°F inside when it's 13°F outside.
My buying experience was smooth and easy. I even changed my mind about pickup and had it delivered to my location with just one phone call.
For upgrades, we have gravel on the floor for drainage and installed water and electricity. I also added shelving units and tables along both sides, and an aisle down the middle. I used plant hangers in the brackets to hold rods for my hanging baskets. The greenhouse can hold about 100 10" baskets. We’ve also added grow lights, a 18k BTU propane heater, and 2 fans for air circulation.
My favorite thing about the greenhouse is that I can play in the dirt during winter and stay warm while doing it. :)
I highly recommend a Planta Greenhouse!
I haven’t started growing anything in my Planta Greenhouse just yet. For now, I’ve been overwintering some plants while planning the setup for an aquaponics system. It’s still a work in progress, but I did install geothermal tubes underneath, which kept the temperature relatively stable throughout most of the winter—except during the coldest days.
The structure itself is incredibly sturdy, and I really appreciate not having to worry about it collapsing under weather stress. Buying the greenhouse was straightforward, but I’ll be honest—the installation process was tough. The instructions were hard to follow, and the videos weren’t in a logical sequence, which made things more complicated. I love the product, but the build was definitely challenging.
This spring, I’m planning to set up raised aquaponic flood tables. Despite the rough start, I’m excited about the potential and confident that the greenhouse will become a great asset to my gardening setup.
Hi,
I'm from Moncton, NB. I'm planning to get a greenhouse in my backyard. I'm curious if I need to use external heating system during winter session for Sigma 32? If so, what should I use? Thank you!
Hi Roby,
For a Sigma 32, you would need one or two of our heaters: https://plantagreenhouses.com/products/2-in-1-phoenix-greenhouse-heater-cooler-2800-w-9554-btus
But it largely depends on how cold your winters or nights get. If you plan to use it year-round, especially in colder climates, you may need additional heating to ensure optimal temperatures.
Please note that our heaters require a 240v outlet, similar to what you would use for a stove or dryer. Some of our customers opt for alternative heating solutions like propane or gas heaters.
For more tips and ideas on greenhouse heating, check out our blog: https://plantagreenhouses.com/blogs/learn/tagged/heating-cooling
Feel free to reach out to info@plantagreenhouses.com if you have any more questions!
I ordered the sigma 32 model in April ‘23. Fast shipping and no problems with the freight delivery. It is now September and it has been a little summer project putting together. Received all of the hardware with no missing parts, and there are a lot of them. Comes with assembly instructions that seem overwhelming at first, but once you match up your parts it’s not bad. Definitely at least a 2 man job. I live in Illinois and I’m betting this will be warm in to December. It will be exciting to see just how many more months I can get out of the growing season. I still need to purchase the vents at a later time but I love this greenhouse! It is the best value for your money I could find. I look forward to many years of use. With the 5 year warranty, I think it will last 10 years or longer. Thank you for such an awesome experience!!
Hi Tisha,
It's great to know that the assembly went smoothly and that you're looking forward to an extended growing season. We appreciate your kind words and hope you enjoy your greenhouse for many years to come!
| 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 | 3 |
| Sigma Polycarbonate Extension | 82 | 44 | 2 | 31 | 4 |
| Total weight: | 557 |
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:
