Last night I bumped into a helpful FAQ on the American Hemerocallis Society website after searching for info on "daylily summer dormancy." What I was looking for was included in a section on "What diseases affect daylilies?" and just below the nod to summer dormancy there was an entry for rust which mentioned avoiding excessive nitrogen and inadequate potassium nutrition. I don't know what level would be considered "excessive" (??), and I'm sure the nitrogen/alfalfa mentioned here must not even be in the same realm as what is meant, but the juxtaposition caught my eye and may make others wonder, too?
So, now I'm curious about what the possible link might be between rust and high nitrogen or low potassium, because I was also planning to use some nitrogen sources like alfalfa or chicken manure. Having had some fertilizers "burn" plants after use, I try to be careful about possible impacts, and if the "excessive" use of mild fertilizer mixtures can do that to my plants, I wondered if other sources of nitrogen might also?
I suppose it is possible the information has been superseded, since rust is also referred to as a "new" disease, so it may have been written almost 15 years ago. Does anyone know, though, where that association may have come from? Hate to bother
@sooby again but hoping she might be able to clarify for us?
The section appears about 3/4 of the way down the page here:
http://www.daylilies.org/AHSfa...
