calling all dahlia experts
I am new to this forum I need all of your help with a dahlia situation. I have a new job as an estate gardener and my employer loves dahlia ( who doesn't?) She ordered about 200 new dahlias this early spring and I got them in the ground in May. The beds I was to put them in has a crop of tulips and then in go the dahlias. This happens every year so likewise no crop rotation. About a third of the dahlias did not come up the rest came up and looked great until they got about 8 inches tall. Then they started to wilt and died. I dug them up and the tuber is all mushy. The people I work with said last years crop was fine. Can any of you tell me what may be happening and what to do about it? I live in hot and humid Virginia and we have had a lot of rain fall this spring.