Devon,
United Kingdom 
Camassia - a comment not a question. I've been trying to upload a photo but have now given up. Never grown these before but am absolutely in love with them now and will be planting lots and lots come the autumn. Such beautiful blooms and just at the right time when i need some glamour as some of the tulips go over. Bees love them too! I'm so excited by these beauties and wonder what my gardening friends think.
6 May, 2017
Answers
I'm trying to eliminate them from a border as well.
6 May, 2017
Exterminate... exterminate or, at least keep under very good control!
6 May, 2017
Oh no!!! Well i shall have to do as MG advises and keep them strictly where I want them. I couldn't bring myself to dig them all up ------- not yet anyway!
7 May, 2017
I find after 4 years they don't reappear. but I do like them, more so than the alliums.
15 May, 2017
Beautiful thugs! I dug up and discarded over 200 bulbs this last Autumn and still there are so many I can and will have to do it again.
6 May, 2017