Why Will My Three Lilac Bushes Not Bloom?

Question

I have three lilac bushes. Two are in the sun for more than eight hours; one is not. But none will bloom. Their foliage is awesome, and they are very healthy looking.

Answer 1

There are several reasons for why this may be happening. This article should help: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm