I've been clearing out a neighbour's back garden which is a wilderness and
was untended for years. Amongst all the weeds are a few choice shrubs and a
Buddlea. This one had about seven ft of solid wood with some new buds just
breaking above that. That was 3 weeks ago

I decided to prune the woody stems back by over half, so that shrub is about
2 ft tall now. and so far no signs of new buds have appeared on what
remains. Have I been too drastic and killed this Buddleia?