The leaves are falling off the 6'x6'x10' beast of a lilac I inherited from the previous homeowners, and I'm wondering whether now is an appropriate time to start reducing the height.
The plan was to take the front 1/3 or 1/4 of the canopy away this year, leaving the rest to flower, look pretty, and shade my pond through the next season; then repeat each year until it is a manageable size.
So I have two questions:
- Is pruning at this time of year likely to cause problems, and if so, when would be a best time to prune?
- Am I correct in assuming that the pruned section would likely produce leaf and/or flower (pond cover) within a year?
Addenda from the responses so far:
- Image from mid July (pointing roughly north). The main bush hasn't changed much, but I've thinned out the front (below that sandstone slab), excavated a waterfall and created an alpine rockery:
- Why: It's a bit unweildy so needs reining in, blocking late afternoon sun down half of the garden.
- Health: Seems quite happy. We did not have the house when it was in bloom, but there is evidence it put out a fair number of flowers.