Old lilac bush say 20yrs old first year it has produced one branch with white flowers how and why has this occurred.
Lilac Flowering Lilac Bush With One Branch Producing White Flowers How Come
gasson added on April 17, 2014 | Answered
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Answered on April 17, 2014
This is known as a "sport." This article has some information: https://www.gardeningknowhow.com/garden-how-to/info/plant-sport-mutations.htm
You might be able to propagate the white branches to grow some white flowering bushes!
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