Pruning Lilac Bushes - Knowledgebase Question

Question by suebo1106
April 5, 2007
How often should lilac bushes be pruned and what needs to be pruned to keep them controlled?

Answer from NGA
April 5, 2007


Lilacs are pruned once a year, if needed, immediately after blooming. Periodically remove some of the oldest stems by cutting them off very short at the base. A rule of thumb would be to take out about a fifth of them each year. This will keep the plant vigorous. Also remove any suckers that are smaller than a pencil in diameter. You may also deadhead, meaning remove the spent flowers, if you wish.

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