The modified climate inside high tunnels creates an opportunity to diversify, producing crops that would not succeed if grown unprotected in the Canadian climate. By protecting crops from weather, pests and disease, high tunnels can help organic growers produce more types of top quality fruits and vegetables with viable yields.
The Polytunnel Handbook describes one of the most powerful horticultural tools created with plastic. A polytunnel is a walk-in greenhouse structure ‘glazed’ with polyethylene clear plastic sheeting.
Season extension is a fact of life for Maritime vegetable growers wanting to compete in the produce trade.