In article , Nick Maclaren
writes

It does, but more for bindweed and horsetail. The former prefers light
soils and the latter heavier, though it is really a preference for the
amount of water.

Are we talking the big white bindweed here or the little pink one? I
know the little pink one seems to like quite dry soils, but the big
white one is very happy in my wet soil.
--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/edward/index.htm