The Riga 3 is a premium greenhouse designed for gardeners who want dependable protection, generous growing space, and the durability needed for northern climates. With approximately 102 square feet of interior space, it provides plenty of room for seed starting, vegetables, flowers, tropical plants, and extended-season gardening without overwhelming the backyard.

Its distinctive curved profile is more than an attractive design feature. The sloped sidewalls help wind move around the structure and encourage snow to slide off rather than accumulate along the roof. Heavy-duty 13-gauge aluminum framing provides strength without rusting, while insulated twin-wall polycarbonate panels help retain heat, diffuse sunlight, and protect plants from harsh weather.

The sidewalls are constructed with 8 mm twin-wall polycarbonate, while the front and rear gable ends feature thicker 10 mm panels for added insulation. A large lockable hinged door makes it easy to move plants, soil, tools, and equipment in and out of the greenhouse.

Ventilation is built into the design. The Riga 3 includes a roof vent with an automatic opener and a rear window to help release excess heat and improve airflow during warmer weather.

Built for serious gardeners and demanding weather, the Riga 3 offers a durable, low-maintenance growing environment that can help you start earlier in the spring, grow later into the fall, and protect your plants from wind, hail, frost, and snow.

Riga 3 Specifications

• Exterior length: 10 feet 6 inches

• Exterior width: 9 feet 8 inches

• Peak height: 7 feet 7 inches

• Growing area: Approximately 102 square feet

• Sidewall glazing: 8 mm twin-wall polycarbonate

• Front and rear glazing: 10 mm twin-wall polycarbonate

• Frame: Heavy-duty 13-gauge aluminum extrusions

• Door: One barn-style hinged door with lock

• Door opening: 30 inches wide by 79 inches high

• Ventilation: One roof vent and one rear window

• Automatic opener: One automatic roof-vent opener

• Vent size: Approximately 3 feet 5 inches by 2 feet 1 inch

Built for Northern Growing Conditions

The Riga 3’s strong aluminum frame, insulated polycarbonate glazing, and curved roof design make it especially well suited for gardeners in North Dakota, Minnesota, and other areas with high winds, hail, heavy snow, and rapidly changing temperatures.

For true winter growing, supplemental heat, lighting, insulation, and climate controls may be required depending on the plants being grown and local weather conditions.