Sigma 250 (Gen III) greenhouse in a garden setting with trees and flowers
Metal Sigma 250 (Gen III) greenhouse structure in a warehouse setting - Planta Greenhouses EU.
Sigma 250 (Gen III) greenhouse with transparent panels in a warehouse setting
Clear polycarbonate Sigma 250 (Gen III) greenhouse in a garden with flowers and plants around
Sigma 250 (Gen III) greenhouse in a garden with trees and flowers around
Metallic Sigma 250 (Gen III) greenhouse structure in a warehouse setting with shelves and boxes in the background.
Modern Sigma 250 (Gen III) greenhouse with transparent walls and a metal frame, surrounded by greenery.
Metallic Sigma 250 (Gen III) greenhouse with a sliding door in an indoor setting
Sigma 250 (Gen III) Greenhouse in a garden with trees and flowers
Sigma 250 (Gen III) greenhouse with a sliding door in an indoor setting
Metal Sigma 250 (Gen III) greenhouse structure in a warehouse setting
Arc-shaped Sigma 250 (Gen III) greenhouse with a person inside, surrounded by trees and greenery.
Roll of metal sheet on a Sigma 250 (Gen III) greenhouse with a textured background
Interior of a Sigma 250 (Gen III) greenhouse with curved walls and a door.
Interior of a Sigma 200 (Gen III) greenhouse with shelves and a ladder.
Partial view of a Sigma 200 (Gen III) greenhouse with a sliding door
Sigma Medium 26 (Gen III)
Metallic framed door for Sigma 250 (Gen III) greenhouses with a latch mechanism
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Sigma Medium 26 (Gen III)

Sigma Medium 26 (Gen III)

Approx Size: 8' × 26' × 7.5'

Bring the tropical heat of the Caribbean to your own backyard in the middle of winter. Enjoy your own micro-climate where you can grow sweet new fruits and flavorful vegetables beyond the limitations of the weather outdoors — a space where you can harvest, snack, or sit and feel wonderful among your plants.

Features

Strong and spacious: long-lasting construction, weather-resistant materials, and roomy design.

  • Insulated Doors [NEW] – Helps reduce heat loss and drafts, creating a more stable growing environment and improving energy efficiency.
  • Upgraded Door Handles [NEW] – Smooth, reliable operation with a sturdy grip for easier daily access and long-term durability.
  • Aluminum Polycarbonate Trim [NEW] – Securely locks panels in place along the arch for added strength, better weather resistance, and a clean, finished look.
  • Window/Door Latch [NEW] - Makes the door and window open together.
  • Wind resistant up to 100 km/h for those living in gusty climates.
  • Comes with two doors (one at each end).
  • Withstands a snow load of up to 91cm (160 kg / m²)
  • Made with a heavy-duty galvanized pipe frame and 6 mm double-wall polycarbonate panels.
  • Arched shape - so the wind, snow, and hail just slide off the sides. 
  • Extendable beyond 30 metres - so you can expand your greenhouse when you're ready.
  • Maintenance-free means you have more time to focus on your garden. 
  • We offer a 5-year warranty because our greenhouse is heavy-duty and long-lasting.
  • Access to our private Facebook group to connect with and learn from other greenhouse owners.
$4,650 CAD
$5,050 CAD Save $400 Sale $4,650 CAD
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Description Reviews Shipping FAQ

About Sigma Medium 26 (Gen III)

The Sigma Medium 26 (Gen III) was designed with a focus on spaciousness and stability. This greenhouse is perfect for 3 or 4 seasons of growing, allowing you to harvest fresh fruits and vegetables well into the colder months. Our Sigma greenhouses are built to last, featuring a rounded design and creative construction that brings heavy-duty greenhouse engineering into your own backyard.

Sigma 2.5x8 (Gen III) by Planta Greenhouses EU

Exact size: 98.4 x 89" x 315.7 inches

The end-to-end airflow, spacious size, and high 7.4' ( 2.26-metre) roof height make this a comfortable place to garden throughout the day.

The greenhouse comes with:

  • two doors
  • two manual windows
  • the option to install multiple windows.

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.

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Up To 160 kg / m²
160 kg / m² is equal to 91cm of fresh snow layer or 46cm of packed snow layer and is maintenance-free in the winter More About PSF
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Wind Resistant up to 65 mph (100 km/h)
Sturdy greenhouse construction that resists winds up to 100 km/h
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Extendable & Customizable
This greenhouse can be extended with additional expansion kits
 
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Shipping

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. 

 

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