Why did my lilac bush have no flowers, only leaves?
Why Did My Lilac Bush Have No Flowers, Only Leaves
Certified GKH Gardening Expert
If your lilacs are lush and green, but have no buds or blossoms, it might be a sign that they are getting too much nitrogen. Use a general purpose fertilizer high in phosphorus in the early spring. Lilacs like to have lots of sun, so if they’re in a shady area, they may not bloom well. Fertilize your lilacs once with the same type of formula again after pruning. This article will also help: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm