Does anyone know name of this plant please.
I bought this plant i think last year or year before, it was full of lovely purple flowers. ( there were other colours at the shops).
I forgot to dead head / cut it down before winter. So just a couple of months ago i took the chance and cut it all down to short stems only,
It's really grown big and busy quickly but no flowers yet.
( previously bit smaller but tons and tons of flowers). It has blackish tones to.it not showing in pic
I can't recall it's name or instructions and wandering as I have neglected it, will it flower again of just get bigger and busy.
Thanks