Q.Lilacs
How fast do lilacs grow? I just planted a seedling about 6 inches tall. When will it flower?

kh0001
Answered on May 2, 2016
It can take three to four years for a lilac to get fully established. The blooms for the NEXT year develop on THIS year's wood, so it probably will not flower this year.
These articles may help you:
and https://www.gardeningknowhow.com/ornamental/shrubs/lilac/
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