Time to act:
Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
The caterpillars of both the small and large cabbage white butterflies are are the two culprits. The first is pale green with a body up to 2.5cm long, the second is bigger at 4cm and is yellow with black markings. The adult butterflies lay eggs at different times: the small from February to April and again in late-summer, the large in April and May. This means the caterpillars can be busily munching away from early spring through to autumn.
Caterpillars eating holes in the outer and inner leaves of brassicas, with nasturtiums also being attacked.
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brassicas and nasturtiums