Posted: 23/04/2012 at 18:35
Hi Alina, after doing some research I think you may be right and they're suckers. I've taken some photos but for some reason they're not that in focus, sorry. Hope they help
This is one I managed to pull up earlier today.
This is the same root but with the grass taken away showing further shoots.
I don't think it's one of the trees in our garden but there is a tree behind us, against the fence, which has a similar leaf. I have pulled down a branch to take the photo below:
Is there any way I can kill them and not kill the neighbours tree if they are coming from it?