Posted: 04/05/2016 at 12:02
Kitty, you can cut it back as hard as you like..
Couple of things
it is really tough and resilient.
if you don't cut it it will produce delightful blue flowers. Cut it and you won't.
I would repot or take it out of the pot and tease some soil away from bottom, sides and top. I would then fill in with fresh compost...I would use john innes number 2 mixed witb perlite