Lilac Bushes - Knowledgebase Question

Westwood, Ma
Question by mvanin
June 13, 2009
3 years ago, I planted Lilac bushes that have not bloomed in 2 years, dispite getting plenty of sun, fertilizing, good soil and irrigation. (They bloomed the 1st year)

What am I doing wrong? Everything else in the garden blooms beautifully!


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Answer from NGA
June 13, 2009

0

There doesn't seem to be any reason at all, does there? Lilacs bloom on new growth so you might try pruning yours back now to encourage new growth. Later this summer you should see developing flower buds on the branches. The only other concern is over fertilizing. If your lilacs are getting nitrogen fertilizer they may put out lots of new growth at the expense of flowers. Try feeding with a low nitrogen, high phosphorus fertilizer such as a bloom booster. By the way, the best bloom in lilacs happens after an especially cold winter. This explains why some years lilacs bloom profusely and other years the blooms seem sparse. Good luck with your lilac!

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