I bought and ornamental sage from the 'DeathRow' shelf in the local GC for a £1. I have cut the dead flower stems off, re-potted in Multi-purpose compost.
My question is 'what happens next', it looks quite healthy at the bottom.
It'll sit and wait for spring - don't let it get too soggy at the roots- that's what kills sages - good drainage, gritty soil is best.
In the spring cut it right back , find it a sunny spot and stand well back
Salvias are often tender, so keep frost-free and wait for spring.
I'd assumed this was a type of Salvia officinalis - but maybe not
This should help identify whether you have a frost-tender variety or not
Hi Dove, from your link mine looks like it could either, PS36 Stachys officinalis Betony or PS02 Salvia clevelandii Jim Sage, Cleveland Sage.
Its outside but undercover and so quite dry. I'll move into the greenhouse when I get home tonight and re-pot in the spring in gritty soil. I have a great sunny spot for it in the summer.
Betony is a British native wild flower, with a whorl of pink flowers mostly at the top of the flower stalk. It's unlikely to be on sale at a GC - but please correct me if I'm wrong! I don't know the Cleveland sage, but looks great if it's that - lucky find!