Lilac won’t bloom

Lack of flowering could result from pruning at the wrong time of year. Your lilac will start to set flower buds for the following spring in midsummer. Pruning in the fall or winter would remove these buds. The best time to prune would be right after flowering in late spring. The hydrangea sets next years flower buds in October so prune right after bloom in September. Prune branches down to the first or second pair of fat buds. For bigger flowers, thin out stems thinner than a pencil.

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