Thanks for the advice........I've thinned them out and cut some to put
on display as I too thought they were beautiful. I'm going to leave
some to collect the seeds and see what happens to the rest next year.

As my vegetable area is my garden I do like to grow things that look
good as well as being functional, particularly as it is a communial
area I've resuced from weeds and imminent concreteing!

Thanks again for all your tips