Persian lilac buds turning brown
Hi all. I just planted two persian lilacs in my yard. They get full morning sun and light afternoon shade. I tried to do my homework and plant them properly. I added compost and lime to their beds when I planted them and I have watered them deeply once a week when there hasn't been any rain. When I got them they had wonderful fragrant blooms on them. I was excited because there were a lot of buds as well. That was a month ago. Now the buds are turning brown before they bloom. I have no idea what is wrong. Anyone have any suggestions? Could it be from too much lime? Or some sort of disease? I looked at lilac diseases, but didn't think it matched well with any. Both plants are doing this. I'd appreciate any thoughts!