People have opinions on polytunnels, Hans has his opinion and more than 30 years of experience growing in polytunnels. He will answer all your questions about models, siting, cost, growing systems, rotation, propagation, watering, soil fertility, suitable crops and best varieties, and an all year round growing plan. His golden rules for buying and using a polytunnel have gained nearly legendary status and have benefited hundreds of gardeners all around the country who have attended his courses over the past 20 years.