By Amundy
Gloucestershire,
United Kingdom 
Can anyone help me identify this very attractive plant growing on my allotment? It's growing among the raspberries (maybe because I didn't hoe that bed this year), 3ft high (competing with the rasps?), and a feathery feel to the flowers. The early seeds are round and mid-green.
11 Jun, 2011
Answers
Common name is scorpion weed. it took me months to find out what it was when it appeared in my garden. I love the way the flowers unroll, like fern fronds.
11 Jun, 2011
Thank you. There seem to be various kinds of scorpion weed and this I think is the lacy one, hopefully not rash-producing; so far I've been OK.
It's the first time I've seen the plant, so have no idea where it came from. I shall definitely collect the seed.
12 Jun, 2011
I've never had any sort of rash from.
12 Jun, 2011
Mine has sown its own seed. I haven't had a rash either - it must be a different sort from the nasty one.
16 Jun, 2011
That is the risk when using common names, more than one plant can be called 'scorpion weed'.
17 Jun, 2011
Phacelia grown as a green manure.
11 Jun, 2011