Posted: 01/03/2014 at 18:42
Chicky, I think it's a euphorbia. I bought one a few years ago but it didn't do much and I dug it up and gave it away. However, since then, like you, I get large plants growing between the house and the pathway paving slabs. Just can't remember what type of euphorbia it is but I'm sure someone on here will know as I have seen it in other gardens.