Replanting after disease
I grow a lot of lilies - mostly orientals and asiatics. Last year my Casa Blancas looked diseased and this year they either aren't coming up at all, or are small and mottled. I have to dig them up and throw away the bulbs, but want to replant in the same place next year. I was planning to add several inches of compost and topsoil to the area before replanting, but I wonder whether I'll just have the same problem next year if I do. Do I need to plant something different there instead?