Backyard Discovery Aggie Cold Frame Box

The lid uses a temperature-sensitive wax cylinder that expands as the internal temperature rises, physically pushing the hinge open. As the temperature cools, the wax contracts, allowing the lid to close automatically. It requires no batteries or power source to operate.

Yes, cedar is naturally resistant to rot, decay, and insect damage, making it an ideal material for outdoor gardening structures. While it is durable, applying a wood sealant annually can further extend its lifespan and maintain its appearance.

Weighing nearly 95 pounds, the Aggie Cold Frame is substantial and stable. Its powder-coated steel legs provide a sturdy base, though you may want to place it in a sheltered area if you live in a region prone to extreme windstorms.

This unit is designed as a stationary structure rather than a portable one. Due to its weight and construction, it is best to choose a permanent or semi-permanent location with good sunlight exposure before assembly.

The double-wall polycarbonate lid is designed to trap solar heat and protect plants from light frost and wind. While it significantly extends your growing season, it is not a heated greenhouse and may not be sufficient for keeping tropical plants alive during deep, prolonged freezes.

Maintenance is minimal. You should periodically wipe down the polycarbonate lid to ensure maximum light transmission and check the steel legs for any signs of rust. If the cedar begins to look dry or gray over time, you can apply an outdoor-safe wood preservative.