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I have 2 6 year old honeysuckle's that basically cover a wooden gazebo, one
from either side. It always puts on a good show but I fell its time to give
it a good hair cut. Firstly, when is the best time to do this and secondly
just how far back should I trim it?

Not sure about the right time exactly but now is probably a good a time
as any. To ensure flowering you want to give them a chance to recover
and fill in the gaps you create when pruning. You describe expecting to
give them a haircut. This implies you expect to trim away from the
outside but I think when you start you'll realise you're going to have
more fun than that.
As honeysuckle grows it puts on new growth on the outside leaving
numerous bare brown stems within the structure. It is these bare stems
that you really want to be pruning out whilst leaving the new leafy
growth to settle into the space you create. This means getting to the
inside and working outwards. I don't think it is possible to prune a
honeysuckle back too far, they're very tough. Have Fun.

--
dave @ stejonda

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