Hi - I am new to this forum and i am hoping that some of you experts can help me out with this really tricky problem.

We have a weed that grows out from under the block paves on the drive - it is green and looks like little Christmas trees - or like the ends of the branches of the Christmas tree. A sort of brown twig like centre spine with green blades coming of in a herringbone style.

We have tried every make of weedkiller including the 'kills down to the roots' kinds and it keeps coming back.

Can anyone tell us what it is plus if there is a way to get rid of it once and for all - preferably without pulling the drive up :=)

Many thanks