Eliminating Sedum

I have an infestation of a variety of low-growing Sedum among my roses and I can't get rid of it. I have tried hoeing, pulling up and use of Weedol, but nothing kills it off, it just keeps spreading.
How can I get rid of it?

 

Sounds like a job for weedkiller to me. Hoeing probably just spreads it.
Have you tried roundup, but I think its probably a bit too late now to use it effectivly.
Probably best to try and pull out as much as you can through the winter, and spot treat any bits that get going again next spring.

 

Many thanks for that. I have noticed that Weedol seems to set it back and I'm probably at fault in not following it up with further applications before it has time to recover. I'll try Roundup.