With our unpredictable weather, there''s never been a better time to cultivate vegetables under shelter. Experienced grower, Klaus Laitenberger shows how to use the heat and shelter of a greenhouse or polytunnel to maximise crop production and supply tasty, healthy food throughout the year. He gives full details of sowing, planting, spacing and harvesting for all our best-loved herbs and vegetables, as well as introducing exotic newcomers such as pepino and yacon.

Formerly the Head Gardener at the Organic Centre at Rossinver, Co. Leitrim, Ireland, Klaus Laitenberger has been growing vegetables organically for 20 years in the UK and Ireland.