Help!

Can anybody please?
I believe these are alliums which unfortunately have taken up residence in my garden and are increasing in numbers. Would desperately like to know how to lose them! Have tried digging them out and have used weed killer without success. Any infomation would be gratefully received.

Click image to enlarge

Re: Help!

Reply from Becca Duncan

Hi Marilyn,
Your mystery plant is not an allium but an arum. Arum italicum is admired by many for it's pretty speckled leaves. If you would like to eradicate this plant from your garden, round up is probably your best bet but it may take a number of applications and a bit of persistence. Good luck.