Trimming a Teucrium Fruiticans hedge
I have a small (2ft high x 15ft long) Teucrium Fruiticans hedge around the edge of my front garden. Never really taken a lot of care to cut it correctly but its never really failed to give some nice summer colour. I've only ever cut it back to a tidy shape at about 2ft high.
Its gotten a bit unruly currently and I'd like to really understand what it needs and get the best from it.
When and how should I trim it up. RHS says pruning group 7 and cut it back hard..
Whilst the lower growth is pretty woody that seems very drastic and I dont want to kill it off and of course I'd like to keep the hedge shaping if poss.
Anyone any advice ?