Thanks infradig, you've nailed it. central coloured floret, flowering period, even the curling in of the old umbels - which I hadn't picked up...
The local council decided 2 years ago to let the verges run wild. Probably as a result, this summer I've noticed a number of hemlock plants...
I'd love to give it a go, but my garden's very dry and shady, don't think it would be at all happy!
Thanks Pete, you've got it. Looking it up though, it wouldn't thrive in my shaded garden.
I agree CarolineL, looks very much like a youngish Hawkmoth caterpillar. Greenknees, you might find this site useful in identifying it further:...
Saw this in a somewhat neglected office garden by Poole park. Mid July. Can anyone put a name to it and tell me anything about it?
Separate names with a comma.