Planta Greenhouses

Sigma Urban Greenhouse

Sigma Urban Greenhouse

Approx Size: 10' × 13' × 7'

Regular price $2,300.00 USD
Regular price $2,500.00 USD Sale price $2,300.00 USD
Sale Sold out

Turn your backyard into a lush garden that continues to flourish throughout all seasons. The Planta Sigma Urban provides cozy warmth and reliable protection, allowing your plants to bloom long after the outside growing season has ended.

  • Features two split doors at either end.
  • Wind resistant up to 65 mph (100 km/h) and ideal for breezy areas.
  • Withstands snow loads up to 3 feet (32 psf), making it perfect for snowy climates.
  • Constructed with 6mm double-walled polycarbonate and a sturdy galvanized pipe frame.
  • Wind, snow, and hail easily slide off of the arched design.
  • Extendable and customizable so you can create a unique space for your needs.
  • Rust-resistant and maintenance-free for less worry year-round.
  • Reliable and long-lasting with a 5-year warranty.
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Rated 5.0 stars
Based on 3 reviews
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
3 reviews
  • TD
    Theodore D.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    2 months ago
    Nova is fantastic!

    We were a little concerned about this shipping (living up in Alaska), but these guys had no issue delivering it and we got it set up and working within a week. Everyone was very helpful.

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  • FA
    Francesco A.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    2 months ago
    Really excited

    This greenhouse holds in so much heat, I wouldn't be surprised if I could grow lettuce year round. Really excited to explore the possibilities!

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  • KS
    Kyle S.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    3 months ago
    The guys at Nova were very helpful

    This is my first greenhouse and it was a little overwhelming trying to figure out what I should be looking for. The guys at Nova were very helpful & set me up with this awesome compact size that fits great in my backyard. Really happy with my experience.

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  • 5-year Limited Warranty

  • Extendable up to 100ft

  • Windproof up to 65 mph (100 km/h)

  • 32 psf (160 kg/m²) snow load

The Planta Sigma Urban was specially designed for enthusiastic gardeners in urban and suburban settings.

The double-walled polycarbonate offers exceptional insulation, making this greenhouse ideal for 3 or 4-season gardening.

The Sigma greenhouse line is built to last. The roomy interior and highly durable design bring the power of a heavy-duty greenhouse into your own yard.

Additionally, the rust-resistant and long-lasting galvanized pipe frame can withstand moderate to severe weather conditions, safeguarding your plants throughout fluctuating temperatures and seasonal challenges.

The Sigma Urban greenhouse comes with:
• Two doors
• Two manual windows
• The option to install multiple windows

Finally, the end-to-end airflow and the distinctive 7-foot roof height make this greenhouse extremely pleasant to work in throughout the day.

About Planta Greenhouses

Planta Greenhouses has combined innovative engineering with practical design to develop some of the strongest and most versatile greenhouses available. 

The heavy-duty galvanized steel frames and durable polycarbonate panels mean Planta Greenhouses are capable of withstanding one of the highest wind and snow loads of any residential greenhouse kit on the market. 

Finally, with key features such as extendable length and customizable design, Planta Greenhouses are truly a one-of-a-kind solution for your backyard gardening needs.


How much snow can the Sigma greenhouse hold?

On top of the greenhouse, the Planta Sigma models can support up to 3 feet of fresh snow (32 psf or 160 kg / m2).

What is the wind resistance on the Sigma greenhouse models?

The Planta Sigma Greenhouse can withstand wind speeds up to 65 mph (100kph).

Are there customization options for the Sigma greenhouse?

Planta Greenhouses Sigma model can be extended up to 100ft. Additionally, vents, fans, heaters, and lights can easily be incorporated post-purchase.

Is the greenhouse equipped with doors on both ends?

Absolutely! The Planta Sigma models feature 2 manual split doors on either end of the greenhouse.

What materials are used to construct the Sigma Greenhouse?

Planta Greenhouses has designed their Sigma Models with 6mm double-walled polycarbonate panels with a UV-protected exterior. The greenhouse frame is made out of strong, heavy-duty galvanized pipe.