Plants infected by the midge cannot develop flowers

Plants infected by the midge cannot develop flowers.

The midge lays its eggs on the heart leaves that are in the first stage of development, which are destroyed by the emerging larvae. This prevents the cauliflower plants from developing any further. Who sprays the heart leaves weekly preventively with a systemic insecticide, prevents egg laying or kills the larvae, before they can do any harm. Spraying begins in mid-April or. about 8 Days after planting and will be three- repeated up to four times.