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Encarsia
Whitefly in the greenhouse.This tiny parasitic wasp lays its eggs in young whitefly, killing them and hatching to build a new population. Supplied as black pupae on cards. Apply April-August (when air temperatures are 16-20°C, night and day). Pack of 500 (to treat 50m²).Pack contains living organism, and should be kept refrigerated on arrival, and used before the expiry date, approximately 3 to 4 weeks from date of despatch. Please note - this Biological Pest Control product will only be delivered shortly before or during the stated application periods. Please allow 7-10 days for delivery. (Please note: This product is not available in Eire.). Pack of 500. Full instructions included.. Flower / Fruit from June to first frosts. . .