The best greenhouse design for cold climates is one that maximizes heat retention and minimizes energy loss while providing adequate light for plant growth. A passive solar greenhouse, often oriented to face south, is ideal as it captures and stores sunlight during the day. These structures typically feature double-layered polycarbonate or glass for insulation, with well-sealed joints to prevent drafts.
Incorporating thermal mass materials, such as water barrels or stone floors, helps store heat and release it during colder nights. Steep roof angles prevent snow accumulation, while insulated north walls reduce heat loss. Proper ventilation is also important to regulate humidity without compromising warmth.
