I like busy lizzies and try to plant them every year. However, the same thing has happened to me, mine have all died. Can't think why. A couple of years ago the same thing happened and I read in a gardening book that they had a virus and it was not just my busy lizzies, but all of them. I thought the virus was cured by now and hoping for the best, bought some more, but maybe it is still there or perhaps in the soil, since I planted them in the same bit of garden.