The Columbine is a durable ground-to-ground house ideal for winter greenhouse protection, early spring starts and inexpensive greenhouse expansions. This freestanding structure is made of high-strength, 2-in. galvanized square bows. With up to 12-ft. peak height, many growers use Columbines for multi-tier production with hanging baskets overhead and flats or containers below and along the sidewalls. Outfit the Columbine with heat and mechanical ventilation or go passive with roll-up sidewalls and large double slider doors on the end walls.
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