In the past, planting season for many horticultural crops began in May to avoid the threat of frost; however, traditional planting times may change for some commercial growers as more producers use high tunnels to extend the growing season. High tunnels have become a popular and profitable method to produce high-value crops. They are simple, tall, plastic-covered structures used for the production of fruits and vegetables, cut flowers, and many other crops. They resemble greenhouses but cost less to erect and operate.
Iowa State University
Naeve, Linda Lou, "Second workshop offered on Horticulture Crop Production in High Tunnels" (2006). Integrated Crop Management News. 1221.
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