Lilac Not Blooming
I have three lilac bushes in my yard. Two are purple and one white. I've had one purple for about 7 or 8 years and it has never had a blossom. The white one I have had for about 5 years and it too has never had a blossom. The other purple I've only had for 3 years and began blossoming the second year I had it and has more blooms every year. What is wrong with my two older bushes? Why won't they bloom?