[cc]

When are they supposed to show their ugly selves?
I read somewhere in February/April. No sign of them yet. Would have preferred to leave the netting of until I had to.

[Nobbie]

I’ve seen a few in the last week, so better get that netting on!

[mumofstig]

I’ve seen a few in the last week,

Same here

[mumofstig]

This butterfly normally has 2 broods each year, and there is often a 3rd brood. The first brood emerges in April, with a peak in May. In typical years, their offspring emerge in July and fly through August and into early September.

https://www.ukbutterflies.co.uk/species.php?species=brassicae

[ches]

I caught one in my netting yesterday! then i found a hole in the net.