Cabbage root fly - oh no!!!!

[Catrina]

Went to our plot this afternoon and was really shocked to see two of our cabbage transplants have wilted.They were ok yesterday when we were there. We dug them up and they were full little maggots. We put collars round but these went in later than the first lot we put in and were just put in to fill a few spaces. They all had collars on when they were planted into the ground. But maybe they got it before they went into the ground. Will it affect the rest of the crop because they are looking really lovely now. Should I start with sowing some more seeds.

[Two_Sheds]

yes, sow some more seed. Maybe the fly got to the cabbages before you planted them out? Or perhaps your collars aren't big enough?