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nat4b

Disease question

2 years ago

So last year we were in severe (even extreme) drought and daylilies were doing just fine. Minor problems as usual which is nothing. This year - warmer winter, adequate rainfall, they started out so nice and green, big, some huge and about the time scapes started to appear this happened.


It would start as a yellow leaf in the center of a fan side. Not the center of a fan, where the scapes appear but like the lower and upper leaves would be fine but right in the middle one leaf is yellowing. And spreading. One very old diploid got yellow fast, I pulled slightly and the leaves just fell out. No smell. Others did not pull as easily. Small scapes got brown very fast and those that already had buds big enough to open they would just dry out yet look wet. Not dropping buds just look very dry yet wet.


At first I thought it is the ones I disturbed, read hacked last year. My clumps are so big there is no way I can dig out and lift those, so I cut a piece out here and there. I hate doing it to them but it is what it is. But no, some of those are alright, and some are sick that I had never touched, and some young seedlings. All over the place. Some big clumps would have 2-3 fans sick but others are fine and bloom well. Actually Very good bloom year, big, colorful, remarkably clean!!! Some blooming multiples that I have never seen more than 1-2 flowers a day.


It's not as bad as 2012 sickness (Midwest malaise) where they were dying and rotting left and right and very few bloomed but still gets me worried.


I am guessing some kinda rot. Crown rot? I dug out one seedling and it had only one blade of half green looking leaf left and some mush inside but the roots, to me, looked fine and big for a 1 fan daylily. I stuffed it in a pot and it is now growing side shoots and small leaves from that one leaf. Did not smell either.


So I guess my question is can you tell from these (not the best) pictures what it is or maybe have experienced something like this. And what should I do. Cut or pull affected leaves, try to dig out dying fans? Leave them be.


That was taken on July 10 and it is getting worse.




This was a nice thick long scape with 20 buds just a week before this picture.








And I am also so sorry that I can't participate more. I am still dealing with debilitating health issues. It's unpredictable when I will have some good minutes or how many. I try to keep up with the forum and enjoy your beautiful daylilies.


Speaking of, here is a beauty from today, so you have something nice at the end of the long and not a pretty post :)) Soli Deo Gloria



She is gorgeous this year!


Thanks!


Comments (5)

  • 2 years ago
    last modified: 2 years ago

    That's a great picture Nat of Soli Deo Gloria. I can see why it's so popular.......As to your problem, I wish I could come up with a solution but the only two things I can think of that can turn multiple leaves yellow in various places in a fan (as opposed to old leaves on the outside getting ready to slough off) is either heat/cold or water. I had something similar happen this year to a new one I bought wherein one day I looked at it and at least 30% of the leaves were yellow. My other daylilies looked fine. But we did hit 102 that day and this is a northern bred daylily so I thought maybe it reacted to the high heat. My other thought is too much water. In my case however this group of daylilies all had the same amount of water so I tended to think it was the heat.....Within a week it was growing new green leaves to replace the yellow ones which never recovered and were removed. Just something to ponder. Maybe someone else will have a better idea.............And don't worry about not getting on here more often. We enjoy your visits when you are able...........Maryl

    nat4b thanked Maryl (Okla. Zone 7a)
  • 2 years ago

    I've never seen anything like this except rot. When I've had it happen before the roots were OK, but the crown was mushy. Your photo of Soli Deo Gloria is gorgeous. How does that one multiply for you? Mine never multiplied past three fans.


    Debra

    nat4b thanked Scott Hammaker
  • 2 years ago

    Thank you Maryl and Debra!


    Maryl I really don't know what to think, that was interesting that your new one had smth like that too. I too thought maybe too much water and then high heat right after but I don't know. It's funny they say the best fertilizer for daylilies is water, in particular rain water, of which they had quite a bit this year in comparison with the usual, and yet.

    I might ask on the big forum, meanwhile will try to clean the worst one little by little.


    Debra I will try to dig the worst out to check the crown..


    Regarding Soli. I do not remember the particulars before last year but it has been struggling here. That I remember. 1-2 fans. Last year almost died but then sent a couple side shoots and stayed at 3 wimpy fans. This year 4 fans, very good size fans, all four scaped but one (probably) got the sickness and that scape dried out. Apparently likes warmer winters or no freeze-thaw in late winter / early spring.

    I posted last year that I have a very big seedling from it, well it is even huge-r this year, such a monster, that its leaves suppressed and bent the scapes of the neighboring dayliliy which is a pretty vigorous and big plant itself. I was kinda mad at it lol

  • 2 years ago

    Soli Deo was good here this year too. I just dealt today with a potted plant that had a single fan like yours pictured. It was crown rot, and I scraped away the fan and dusted with sulfur. I don't have any expensive treatment for rot. This is the time of the year that crown rot sometimes occurs here. It's heat and stress.

    nat4b thanked mantis__oh
  • 2 years ago

    Glad your Soli was good too, Mantis. Thanks for telling about your experience. I finally had a chance to work in the yard today, dug one seedling out, roots looked good, everything looked normal. I couldn't even pull the scape out. Other than not being green but light yellow it was not soft, did not smell.

    I am not sure actually how crown rot looks, may need to look that up.

    No idea why would mine be under any stress, heat and humidity like usual, good amount of rain, no spraying.. Maybe bugs?