The numbers
Growing Dome Technical Specifications
Explore the dimensions, materials, and built-in climate systems of our six geodesic greenhouse kits. Growing Domes are engineered and manufactured in Canada for long-term, four-season growing.
Growing Dome Sizes at a Glance
| Size | 15 ft | 18 ft | 22 ft | 26 ft | 33 ft | 42 ft |
|---|---|---|---|---|---|---|
| Floor area | 165 sq ft | 230 sq ft | 365 sq ft | 510 sq ft | 850 sq ft | 1375 sq ft |
| Peak height | 9 ft 5 in | 10 ft 8 in | 10 ft 10 in | 12 ft 7 in | 15 ft 5 in | 16 ft 5 in |
| Best for | Urban Backyards & First-Time Growers. | Backyard Gardens & Small Households. | Homesteads & Food Production. | Families & Self-Sufficient Living. | Schools & Community Gardens. | Commercial & Institutional Projects. |
| From (CAD) | $9,950 | $13,950 | $18,950 | $24,950 | $36,950 | $54,950 |
Prices are starting points before optional upgrades. Explore individual Growing Dome sizes to find the right fit for your growing goals. Prices are in CAD.
Built Into Every Dome
Cold-Climate Design
Engineered for harsh Canadian winters, with a durable geodesic structure and passive thermal systems that help reduce supplemental heating demands.
Polycarbonate Glazing
16 mm multi-wall, UV-protected polycarbonate provides excellent insulation, natural light transmission, and impact resistance.
Frame & hardware
Precision-cut, colour-coded framing and steel hardware creates a strong geodesic structure, naturally shedding heavy snow and resisting winds up to 185 km/h.
Ventilation
Solar-powered intake fans and exhaust vents help regulate airflow, humidity, and excess heat. Additional ventilation can improve summer cooling.
Passive climate system
Water-based thermal mass and solar-powered undersoil ventilation retain and distribute warmth. Under optimal sunlight, interior temperatures can reach 20–25°C above outdoor conditions.
Warranty
Protected by a 5-year structural framing warranty and 10-year polycarbonate panel warranty, subject to applicable terms.
LONG-TERM DURABILITY
Built for decades of growing with weather-resistant materials and proven geodesic engineering. Growing Domes have been in use for over 20 years.
Assembly
Pre-cut, colour-coded components simplify on-site assembly. Smaller domes typically require three people, with additional supervision recommended for larger models.
Made in Canada
Manufactured in Portland, Ontario, and shipped nationwide as greenhouse kits for DIY or contractor-assisted assembly.
Ready to size your dome? Configure any size and see a live estimate.