Aphidoletes aphidimyza
range from 1-10 per m 2 /release. Releases should be repeated at weekly intervals until control is achieved. Consult a Koppert advisor or a recognized distributor [...] turn brown or black, and eventually decay. The quantity of aphids consumed by a gall midge larva depends on temperature, relative humidity, age and size of [...] soil or rockwool slabs or hang it in-between the plants Do not scatter the contents Once emerged, the adult gall-midges will leave the bottle and spread