Frequently Asked Questions


The size of the water tank was determined based on the volume required to maintain adequate thermal mass for each dome size. Approximate volumes for the water tank are:

•    15′ Growing Dome ~ 600 gallons
•    18′ Growing Dome ~ 700 gallons
•    22′ Growing Dome ~ 1,000 gallons
•    26′ Growing Dome ~ 1,200 gallons
•    33′ Growing Dome ~ 2,300 gallons
•    42′ Growing Dome ~ 3,200 gallons

We also highly recommend you have a variety of aquatic plants in your water tank to prevent algae and provide nutrients for your fish.


Our passive solar greenhouse design not only provides year round growing, but it also provides superior engineering and durability in a variety of environments. Unlike some solar greenhouse kits, the Growing Dome® geodesic greenhouse withstands wind, snow, heat, and a variety of harsh weather conditions.


We have Growing Domes that are more than 20 years old. Even then, we can refurbish the polycarbonate and structural elements as needed, to give another 20 years of life to this amazing product.  Proper maintenance is required to increase the longevity of your Growing Dome.


You are wondering how much do they cost?  The base price for a Growing Dome greenhouse kit ranges from about $8,000 for a 15-foot diameter dome to about $40,000 for a 42-foot diameter dome.  All of our sizes and prices can be found here.  These prices do not include Shipping, Installation and Owner Supplied items.  You will also need to add your raised beds, soil or talk to us about Customization options.


The rectangular style greenhouse was imported from Europe. When brought to the USA, it simply does not work (except in a maritime climate.) It will cook your plants in the summer and freeze them in the winter. Find out more about the benefits of the Growing Dome design.


Once you have your Growing Dome constructed, your planting beds built, your soil rich in organic materials, it is time to start planting! Here are some gardening tips every new greenhouse gardener should know to ensure immediate success!


The Growing Dome® comes with a 5-year warranty by Growing Spaces® against structural failure of the Growing Dome® struts and hubs, given regular maintenance.  The structural warranty does not include the foundation.  The polycarbonate greenhouse glazing is warrantied by the manufacturer against hail damage and yellowing (pro-rated for 10 years). Growing Spaces® shall pass on all warranties for other parts of the Growing Dome® from the manufacturer to the Purchaser. Warranties will be considered void if the Purchaser alters the design of the Growing Dome® or its features and/or if the Growing Dome® is used for a purpose other than a greenhouse.  Our Warrant is documented on our Product Terms and Conditions.


The unique combination of energy-efficient features that come with the Growing Dome enable it to grow cool weather crops all winter long without any extra heating costs in many climates of the USA. We have found the Growing Dome requires two thirds less the amount of heat than other greenhouses.


Start planning your year-round dream garden today!