Knowledgebase

My lilacs are blooming again!? #357938

Asked August 30, 2016, 9:33 AM EDT

It's late August and I have one lilac bush in my windbreak I noticed last night that has some blooms on it. Granted these are not lucious spring blooms, but rather stubby blooms, kind of like a a genetic mutation bloom? The blooms appear to be from buds that should have been dormant until next spring, maybe but they got ahead of themselves? Unless this bush is just one of those that bloom twice a year and we got lucky, mixed in with the commoners... Anyway, I had to share. I think it's cool. These are lilacs we got from the Conservation District so they started out as a teeny tiny stick.

Olmsted County Minnesota

Expert Response

Second blooms on spring blooming woody plants are not typical, but not unheard of. For instance, some varieties of magnolias often bloom in late summer. It is less common on lilacs. My guess is something weather-related caused this. Whatever buds bloomed this summer will not bloom again next spring, so you might see some reduction in bloom next year.  Read here:
http://blogs.mprnews.org/updraft/2009/09/lilacas_blooming_in_september/

There are "everblooming" lilacs ('Boomerang', for example), but it seems unlikely you'd get such a plant through the Conservation District. And my understanding is that their second bloom is profuse, not sparse.
Dennis in St. Louis Park Replied August 30, 2016, 12:25 PM EDT

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