8 Best Cold Frame Greenhouses
Best High-End Cold Frame
The Juwel Biostar Cold Frame is made of twin-wall polycarbonate panels for excellent heat retention, with three lids that open and close independently. Twenty inches high, it features a 3- x 5-ft. footprint.
The no-drip interior coating protects plants from condensation, and the unit comes with four corner stakes to anchor it securely to the ground. It’s made in Austria, a country on the leading edge of cold frame technology, which accounts for its high price.
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