Daylilies forum: Daylily foliage issues

Views: 774, Replies: 3 » Jump to the end
Bethpage, TN, zone 7 (Zone 7a)
Daylilies Cat Lover Birds Hummingbirder
Buddysgirl
Apr 26, 2018 6:07 AM CST
My daylilies are looking really bad this spring. The foliage is twisted, with yellow and browning areas and some have white or yellow spots. I'm thinking I may have spring sickness, leaf streak and damage from the crazy weather we've had. Not to mention the aphids & slugs! I'm not sure what to do. Should I cut the foliage down low and spray with a fungicide? Any help would be greatly appreciated!!
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Name: Rob Laffin
Mariaville, Maine (Zone 4b)
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RobLaffin
Apr 27, 2018 11:22 AM CST
I'd hesitate to diagnose your foliage issues, which can be caused by so many diff things, but I can tell you from up here in Zone 4, that you may just be looking at effects of unusual cold and related things. Late freezes can make foliage look ratty if it is already up, and every year I get some plants that I worry about. Spring sickness strikes when the forsythia blooms, so that is one indicator if that's what it is.

In any event, I have learned not to panic! By and by they all come out of it and everything's fine later. I sometimes see those spots like you have, but that is not leaf streak as I understand it. I just put down nitrogen, as I do every spring, and spray with liquid kelp. which is full on minerals, to give the plants the best shot.

If you have spring sickness, some fans will lie almost flat to the ground. There's nothing you can do about it but wait. 85% of the affected fans will come out of it eventually.

Like I said, don't know for sure what you've got, but the pics look like what I see a lot of every spring, and they all come out of it, so don't worry too much!
Name: Rob Laffin
Mariaville, Maine (Zone 4b)
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RobLaffin
Apr 27, 2018 11:24 AM CST
PS In recent years, I also spray foliar spray for thrips in spring and again a couple months later.
Name: Sue
Ontario, Canada (Zone 4a)
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Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Apr 28, 2018 1:35 PM CST
The first two pictures look like leaf streak fungus invasion of earlier freeze damage with a little bit of slug feeding. The third could be insect damage, the fourth looks like late freeze damage. I don't think any of it is spring sickness, at least at this point.

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