Forget simply stretching the season by a matter of weeks. Our innovative small-greenhouse plans take solar gain to the nth degree, with a design that’s optimized for winter growing. We’ll show you how to build a greenhouse that’s free-standing and features low-cost glazing and a simple foundation.
Our smart greenhouse design features a south-facing glazed wall that's angled to capture the maximum amount of winter sunlight and heat.
Illustration by Len Churchill
If you choose to build a greenhouse with a vertical south-facing wall, be sure to include a glazed roof to let in winter sunshine, as with this design by Ceres Greenhouse Solutions.
Photo by Ceres Greenhouse Solutions
Banks of water-filled, black barrels absorb the sun's heat during the day and then release the stored energy at night inside Colorado College's solar greenhouse in Colorado Springs.