Nick Maclaren wrote:

: Not just for anchoring. Rosemary tends to be short lived in many soils,
: and I find that I need to renew bushes once every 5 years or so. That
: is the way that I do it.

Interesting. I've read similar things about what constitutes old age in
various bushes (blackcurrants etc), but not seen the possible relationship
to soil type mentioned. I have a rosemary bush that is 15 years old and is
flowering just lovely in all this wind and rain - soil is fairly heavy,
some clay.

Jim