Greenhouses for Sale in Washington
More than 80 Growing Domes stand across Washington. West of the Cascades, buyers plan for wet, low-light winters; farther east, snow, hard freezes, and hot, dry summers shape the setup.
Above Newman Lake, Carleen grows lemons, avocado, grapes, guava, herbs, strawberries, and tropical flowers in a 22-foot dome. A heated pond, dehumidifier, and heater support the garden through winter.
80+
Growing Domes installed across Washington.
West or east of the Cascades
West-side sites often need a closer look at winter light and moisture. East-side sites add hard freezes, summer cooling, and local snow and wind loads.
A Washington greenhouse west or east of the Cascades
West of the Cascades, a greenhouse may spend winter under soft light and persistent moisture. Farther east, snow, hard freezes, and hot, dry summers change the balance. Those regional conditions affect a cool-season food garden differently from a layered subtropical room.
Growing Dome glazing admits direct and diffuse light as sun angles change. The undersoil fan circulates air, while automatic vents on smaller kits or powered fans on larger domes release excess heat. The pond moderates temperature swings. West-side growers often prioritize humidity control and winter lighting; east-side projects may add summer cooling, cold protection, and higher wind or snow ratings.
Carleen's forest garden makes the relationships among passive solar design, thermal mass, the undersoil system, and automated vents tangible: stored warmth, moving air, and moisture all influence the plants sharing the room. The weather resistant greenhouse kit adds current wind and snow ratings by size.
Estimate greenhouse heating costs in Washington
Enter your ZIP code, dome size, indoor temperature, and fuel to estimate seasonal heating energy for your setup. For annual and lifetime costs, additional structures, and the full calculation method, open the full heating cost calculator or browse our greenhouse planning tools.
15' Growing Dome Small Greenhouse Kit
18' Growing Dome Greenhouse Kit
22' Growing Dome Greenhouse Kit
26' Growing Dome Greenhouse Kit
A forest garden above Newman Lake
Above Newman Lake, Carleen transformed her 22-foot Growing Dome into a layered forest garden. Lemons and avocado form the upper canopy, while grapes, guava, herbs, strawberries, and tropical flowers fill the space below. Her heated, aerated pond anchors the garden; a dehumidifier and heater set near 50°F help carry the tropical plants through winter.
Read the forest garden story.
A 22-foot dome at Long Beach
Larkin Stentz shared photos of the 22-foot Growing Dome at Green Angel Gardens in Long Beach, near Washington's southwest coast.
Read the Green Angel Gardens update. More Washington stories live in the Washington greenhouses archive.
Local review and gray-season growing in Washington
Local permits, gray-season moisture, freight, and winter crop planning.
The most common Growing Dome sizes in Washington
The 26-foot is the most common model in Washington, followed by the 22-foot. Both featured owners chose 22 feet, yet their projects illustrate different possibilities: Carleen built a layered forest garden above Newman Lake, while the Long Beach dome belongs to a coastal garden. Crops, paths, pond, work, and time among the plants give the layout its shape. The greenhouse guide compares all six sizes, and the shop shows current pricing. The comparison pages also cover alternatives such as a gothic arch.
What would you like a Washington greenhouse to hold?
Carleen's Newman Lake dome became a layered forest garden, but another owner may want winter greens or simply a quiet room among plants. East or west of the Cascades gives us enough regional context for a first size comparison. Winter light, moisture management, freight, and installation can be discussed around the greenhouse you are picturing.
Professional Growing Dome installation is available in Washington for an additional cost. Compare installation options and review Pay Over Time with Affirm. For projects that include both the kit and professional installation, also review Greenhouse Project Financing with Salal Credit Union.
