Daylilies forum→Sick Daylileis - Part 2

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Name: Robert R.
Wharton, TX (Zone 9a)
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adc1947
Jan 9, 2020 10:04 PM CST
I have one particular group of daylilies that I purchase late spring.... First I had crown rot issues due to heat...

Made it to fall and winter and cooler temperatures......and now same plants have another problems.... Rust....! Grumbling

I have removed and disposed of most of the leaves... What is the recommended chemical that I should begin spraying with... assuming it is not too late to do so....? Sad

Comments and advice appreciated.....Thanks....
Name: Sue
Ontario, Canada (Zone 4b)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jan 10, 2020 9:13 AM CST
There are a number of choices and I'm sure people will be along with their recommendations, but you may find this article helpful also:

http://oldsite.daylilies.org/R...

Generally you should not use only one fungicide but alternate between a contact and a systemic, as discussed in the above article. Also make sure any alternative rotation fungicide is from a different fungicide group. The strobilurins tend to be the most effective but are pricey although there is a suggestion for the most economic one in the above article.. Tebuconazole has been recommended as a cost effective treatment in this research which was partly funded by AHS:

https://apsjournals.apsnet.org...

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