My approximately five year old common lilac has never bloomed. It is about 5 ft. tall. |
It isn't unusual for some types of lilacs to take 7 years before they bloom. They bloom on last summer's new growth so prune yours back now to encourage healthy new growth and flower buds for next spring's floral display. They need all day sunshine for best flowering. Aside from the above, you only need to wait patiently until it's mature enough to bloom. Enjoy! |