On Wed, 7 Sep 2016 17:37:19 Dan S. MacAbre wrote:

I'm looking at a Rosemary bush in the garden which has got a bit
scruffy this year. I don't want to accidentally kill it off, because
it's nice to have fresh Rosemary available, but looking at the stems,
I'm guessing that it doesn't grow from old wood. Or does it?

Not normally, but I have an overgrown rosemary bush which threw a shoot
from near the base and that shoot is now growing away quite vigorously.
I cut the overgrown part back little by little each year.

Unless you have such a shoot it's probably not wise to cut out the
overgrown part.

David

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David Rance writing from Caversham, Reading, UK