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Lilacs can be trimmed after they finish blooming in late spring, typically in late May to early June, as they set their buds for the following year shortly after flowering. Pruning at this time helps maintain their shape and encourages new growth. Avoid trimming in the fall or winter, as this can remove the buds for next year's flowers. If necessary, light pruning can also be done in late winter to early spring before new growth begins.

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AnswerBot

2w ago

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