Tuberous pea-friend or foe?

[oldie]

Found these in several places round the garden. Did not really know what they were and one was where I didn't want it. What a surprise! dug up a tuber nearly 4ft long and maybe did not get it all. There are some where I don't want them others where I don't mind. What's the best way to deal with unwanted ones and should I consider leaving the others? Are they pretty flowers or just horrible invasive weeds?

[FionaH]

This is what Wiki has to say Lathyrus tuberosus - Wikipedia, the free encyclopedia never heard of it myself

[oldie]

Thanks for that, I didn't think to look on Wikipedia. I don't know where it came from but if it spreads from the tuber it could go a long way.