Hello. We bought a lilac about 10 years ago. It was blooming when we bought it but has never bloomed since. We’ve fertilized it but that hasn’t helped. In case we didn’t use the right kind, what kind would you recommend, and how often should we put it on the lilac? I’ve read that sometimes it can help to cut it down radically, such as to 6” above the ground. Would that be likely to help it bloom? If so, when should we do that? It’s about 4 ½ feet tall now. In March and April it gets 6 hours or more of direct sunlight. After some surrounding trees leaf out, the lilac is shaded some, but I think it probably gets at least 5 hours of direct sun each day throughout the spring and sumer. We’d welcome any suggestions you have for helping it to bloom.