Why did my daylilies develop crown rot? What should I do this year to keep this from reoccurring?
Last fall, around the beginning of September, I planted several daylilies that I bought from a local nursery. I covered them with leaves and spruce boughs at the end of November. When I removed the mulch this spring, I discovered that several of my daylilies had crown rot, and I lost the plants. What happened, and what should I do this year to keep this from reoccurring?
Submitted by BHGPhotoContest

Daylilies are hardy through Zone 3. Unless you live in a colder zone, it's not necessary to cover them with winter mulch to the extent that you did. Heavy winter mulch traps moisture and encourages rot. You could put bark mulch around the plants, but avoid covering them with anything that will prevent good air circulation.

Answered by BHGgardenEditors