Parasitic Wasps (Aphidius spp) (250) Up to 50 sq.m
Aphids suck the sap weakening plants, foliage may discolour and drop. Aphids produce a sticky deposit (honeydew) which later goes black on plants, they also transmit plant viruses. Three biological control products are available for aphid control, Ladybird Larvae,Lacewing Larvae & Parsitic Wasps,
£14.99
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