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The leaves on the Flame of Love and Cherry Carnival (not all the plants) seemed to be coming in fine. But now I notice the leaves are twisted, some looked chewed on the edges. My own research seems to suggest Spring Sickness. But I cannot find any suggestion on a cure. Most of my research shows this is a little understood disease, and no known cure exists. Seems debate rages on using fungicides. Can you shed any light on the cause or cure? I bought the plants from Andre Viette's nursery in August 2006. I live on Long Island NY. And they have been beautiful until now!
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What you are seeing is probably frost damage where the edges of the leaves are brown and look chewed on and the leaves are distorted. This is sometimes referred to as "spring sickness". Some daylily cultivars are more susceptible to this damage than others. There is no control but sometimes you can get a secondary fungal infection that can enter at the site of the damage. Distorted leaves can also be caused by aphids in the crown of the daylily.
Bayer Advanced 3-in-1 Insect, Disease, & Mite Control hose end sprayer can be used to control aphids and thrips on daylilies plus many diseases like rust.