In article , Kay Easton
writes

So why can't I prune my B davidii now?

I always cut my davidii back a bit now because I don't want it seeding
everywhere - then I give it its proper pruning in spring. It flowers on
'this year's' growth so you want as much growth 'this year' as you can
get to you prune it in the spring!!

Alternifolia you cut back branches bearing faded blooms immediately
after flowering.


--
Jane Ransom in Lancaster.
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