Kate Morgan wrote:
I let loads of nettles grow this year but cannot see any insects on them
yet, what should I be looking for this time of year and what should I
expect to see now or later

I have always kept a patch for comma, red admiral, totoiseshell, and
peacock butterflies to lay eggs on. The stinging nettle is a valuable
food crop for the caterpillars. But, it has to be said, the last
couple of years I havn't seen any sign of them being used.