David Owens, Extension Entomologist, owensd@udel.edu
Cole Crops
Spring has sprung, and with it, the first harbingers, cabbage whites, have emerged from overwintering chrysalises. These white butterflies are now widespread. Early in February, adult diamondback moth were also observed on overwintered kale, and last week harlequin bugs were observed in the same location. Be sure to scout brassicas as soon as plants are out in the field for all worm and bug pests. Cabbage maggot flies should also be active, given that seedcorn maggot is highly active.