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Hyacinth Plant

Q.Lilac Tree Changing Colour

Zone Dublin, Ireland. | Lilacoughlin added on April 23, 2017 | Answered

I have had a mature lilac tree in my garden that blossomed white every year. However, this year it’s blossoming purple. Any idea why this may be? One thing is that my neighbour’s lilac tree was always purple. Did this affect my tree? Many thanks.

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Certified GKH Gardening Expert
Answered on April 25, 2017

I have heard of this before, but it is a puzzle- no one seems to know why lilac flowers (rarely) change color.

One possibility is that it is a graft issue, but this is only true if it is a grafted plant:

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