Hi Flo, so how long was it flowering for overall?
Mine got one feed a few weeks ago, then another now, in desperation at so few flowers! No other special treatments and, like you, I tend to lop off the straggly bits from time to time and that's about it.
Mine is in a very deep, smallish bed with little else in it...soil is ordinary compost, about a year old now.
Do they take more than a year to do more?
Thanks for your advice 