In article , anne
writes

May surely? The bindweed (my main enemy) has flowered already and in certain
places is already dying back. Surely this isn't the best time?

Doesn't matter when you do it so long as the plants are growing
'strongly'. In times gone by I have cut back bindweed in late summer and
sprayed new growth that comes and it has worked.
--
Jane Ransom in Lancaster.
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