By Lisa_steel
United Kingdom 
i have a cherry tree with black fly i have used soapy water and a pest spray the leaves look dead at the ends and its looking sorry for its self. i've cut the ends of were the black fly was what else can i do ?
24 Jun, 2012
Spray with yeast to encourage lacewings to lay their eggs. Hose down occasionally with a hard spray of plain water, to reduce the blackfly numbers, and encourage predatory mites. Order parasitoid wasps from a commercial insectary.
27 Jun, 2012