Читать книгу The Allotment Book - Andi Clevely - Страница 40

Cheaper and easier to erect than a greenhouse, a polytunnel can offer most of the advantages of a greenhouse, although the cladding of heavy-duty plastic sheeting is less heat-retentive and condensation can be a problem. Depending on its quality, the plastic sheet will need replacing every 3–5 years. Make sure there is a door at each end of the tunnel for efficient ventilation.

Fitting automatic vent openers that can be adjusted to open at a certain temperature can relieve you from worry and prevent injury to plants. An overhead reservoir can be used to supply water to capillary matting on the staging or to drip tubes positioned in containers to alleviate watering chores. Blinds are expensive, but shade netting is available for installing in summer as an alternative to applying shade paint.