Passive Solar Greenhouse Design

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, all year round.

Passive Solar Greenhouse
Passive Solar Greenhouse Design Provides Produce All Year Long

Our passive solar year round greenhouse kit is ready for owner construction or for installation by our highly skilled Growing Spaces® crew. These Growing Dome greenhouses allow peaceful sanctuary in a lush year-round garden and work especially well in places with cold, harsh winter climates.

Along with purchase of our passive solar greenhouse kit, we provide you access to an entire website containing the following useful documents and videos to ensure your success in assembling your Growing Dome geodesic greenhouse:

And, we are always just a phone call (800-753-9333) or email ([email protected]) away to provide technical support and answer any questions about our Growing Domes!

Inside a Solar Greenhouse Dome

Geodesic Dome Greenhouse Structure

Structural units of the Growing Dome greenhouses consist of Douglas Fir lumber, treated with an eco-friendly Lifetime® Wood Treatment, ready to fasten to strong, custom-made aluminum connecting hubs. The Growing Dome geodesic greenhouse structural members are warrantied for 5 years from the date of purchase of the Growing Dome.

Our passive solar greenhouse kits come pre-cut, pre-drilled, and color-coded. If you are semi-handy with a hammer, circular saw, and electric drill, you can choose to assemble sizes 26 ft. diameter and under of Growing Dome geodesic greenhouse yourself.

Greenhouse Foundation Wall

The Growing Dome round greenhouse 24″ Foundation Wall all are built from lumber studs and plates clad with a structural siding, insulated with R-10 insulation, and lined with galvanized metal flashing on the inside. Enjoy raised bed gardening in our garden greenhouses with the 24″ foundation wall that comes with your geodesic greenhouse kit.

Polycarbonate Greenhouse Glazing Panels

Our year-round greenhouses feature high-quality polycarbonate glazing. The clear, translucent covering allows 65% to 81% light transmission. This greenhouse covering resists breakdown by ultraviolet light and harsh weather impacts, like hail. The greenhouse polycarbonate glazing has a life expectancy of over 20 years and comes with a 10-year warranty by the manufacturer against yellowing and hail damage. You and your plants will love the soft diffused light inside our Growing Dome greenhouses.

We offer a multi-wall (16mm) polycarbonate glazing with an R-Value of 2.8 and a twin-wall (8mm) polycarbonate glazing with an R-value of 1.7.

Above Ground Pond:

The main thermal mass of the passive solar Growing Dome greenhouses is a large elliptical-shaped, Above Ground Pond for the 15′-26′ Growing Domes. Round ponds are standard for the two larger Growing Dome greenhouses fitting nicely in the round greenhouse shape.

Pre-drilled brackets, hardware, and a pond liner are provided in all geodesic greenhouse kits by Growing Spaces. Locally purchased items include sheet metal and some lumber to complete the tank assembly for these year round greenhouses. Upon purchase you will receive exact dimensions and quantities of these Owner Supplied Items.

The pond in the year round greenhouse can be used as a water garden to grow aquatic plants and fish and is a critical feature of the Growing Dome’s passive solar design. Ask us about our Solar Powered Waterfall Option.

Pond-Pond Plants

North Wall Insulation:

With our passive solar greenhouse kits, Reflectix® custom-cut insulation panels are provided to cover the northern 1/3 of the Growing Dome, acting as a blanket to cut down heat loss in the winter months and shading the above ground pond like an umbrella would during summer months. This keeps the Growing Dome greenhouses warmer in the winter and cooler during summer. The reflective surface increases the available light inside the Growing Domes.

Automatic Vents:

Automatic greenhouse vent openers open and close the vents which prevent the geodesic greenhouses from overheating. In our year round greenhouses, these openers are adjustable and work by the natural heating and cooling of a tube of compressed wax. Read more about our Automatic Greenhouse Vent Openers.

Undersoil Ventilation System:

In the undersoil ventilation system, a small fan draws warm or cool air through pipes buried in the raised beds, thus warming or cooling the soil temperature to enable plants to grow better through all weather conditions. The passive solar greenhouse kit contains the fan, distribution box, and a solar panel to power the fan. The pipe is one of the locally purchased items and readily available through most building supply stores.

Cooling System:

The 26 foot Growing Dome passive solar greenhouse comes standard with one thermostatically controlled, photo-voltaic solar powered, 12V cooling vent fan (a $465 value).

The larger Growing Dome greenhouses (33′ & 42′) come standard with 115V cooling fans, which require an electrical power supply. For an additional cost, a Solar Powered Cooling Upgrade is available for these larger year round greenhouses.

A solar cooling fan or electric cooling fan can be added to any size of Growing Dome greenhouse. The Desert Cooling Package comes with one active solar cooling fan and a misting system, which may also be added to any passive solar greenhouse kit.

Please contact us if you’d like to get more information on Growing Domes.  Or to receive more informative gardening and Growing Dome articles, please sign up for our monthly Newsletter “The Happy Grower”

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