18-foot Dome Greenhouse Kit


Multi-wall – 16mm ($47/sqft)

$10,950 – Twin-Wall ($43/sqft)

255 sq. ft. floor area

10 ft. 8 in. tall

Fresh produce for 3 – 4 people

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The 18-foot Growing Dome geodesic greenhouse kit is a wonderful way for small families to enjoy a healthy, sustainable lifestyle.  This kit is an ideal size for producing organic fruits and vegetables for your family of 3-4. It has a small footprint and is also great for urban gardening.  All of our greenhouse kits are available with optional weather upgrades for desert climates and windy environments. Some of the polycarbonate triangles on the 18′ Growing Dome have taped tips to reduce waste and maintain affordability. 


This greenhouse kit is great value at $47 / square foot of gardening space on the multi-wall model, $43 / square foot for the twin-wall.   It has 80 more square feet than our smallest greenhouse kit, the 15-foot diameter Growing Dome.  Our next biggest size is the 22-foot diameter Growing Dome which has a total of 380 square feet of greenhouse gardening space!  Learn about how our friend Andrew Trujillo (@cogreenthumbdaddy) makes the most out of his 18′ Growing Dome to supply food for his wife and three young kids, while also volunteering at the Pine River Garden Club.

What's Included

Installation Options

Self Install

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Full Install

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What Else Do You Need?

Your Growing Dome greenhouse kit is ready for assembly by you, a contractor, or our Growing Spaces crew.

A few items you will need are bulky and costly to ship, and easily available at your local building supply store. These Owner Supplied Items are not included in the greenhouse kit to lower your overall investment.

Payment, Shipping & Delivery

Growing Spaces accepts all major credit cards, but offers a 2% discount when paying by check, Echeck, cash or wire transfer.  50% of the order total, plus a signed sales agreement, is due when the order is placed to reserve a shipment date. The remainder is due at least one week prior to shipping the greenhouse kit. 

New Greenhouse Financing Option: 0% Interest for 12-months is now available through Splitit and requires a 10% deposit to reserve a shipment date.  Monthly payments will begin when the order is shipped.

Shipping / delivery, crating, and handling charges are not included in the base price of your kit. Local sales taxes apply for pick-ups and all Colorado residents.

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