I have seen the same problem here with yellow leaves, we went from flooding to being very dry. I imagine it is the extreme change in weather. Mine have perked up since we got some rain a few days ago.

If you have pics to show what they look like, then maybe some suggestions. Many things can cause yellowing leaves including the daylilies not being able to uptake nutrients from the soil or a lack of.

Well I don't know how to do pics, but here is part of what happens. In a row of 3, the one in the middle is yellow, not the other 2. This same plant was green last year, and we had much the same weather, only in June, not May.

We have very alkaline soil here and before we got all this rain in April and May, we had to water a lot because of a very dry winter. We have alkaline water too.

So I suppose it's a nutrient problem, but there are no green veins in the leaves.This is happening with a rose bush too. Last year it was gorgeous, this year terrible colored leaves, like red, and beige, plus the yellow, although I can see some green veins on some.

One daylily looks to have the leaves even turning white. I don't know what to do.I have scapes on a few, but not as many yet as last year this time.

Like this? http://www.daylilies.org/ahs_dictionary/chlorosis.html

It's not chlorosis, the whole plant is yellow, don't think its PH, could be too much soil moisture I guess. They all get the same fertilizer.

I just don't know what to do now.

Dr. Pat says crappy weather. She would have to see the plant to give any other diagnosis.

If you have alkaline water and soil, what kind of fertilizer are you using? What is the NPK ratio of the fertilizer?

I'm using one by Fertilome called Southwest Greenmaker. 18 0 6 with 10 percent iron.

In my opinion, your plants are not getting oxygen in the root zones. I'm seeing some yellowing on lower leaves here with all this rain, but I have good drainage. Also, unless you have had a soil analysis that says you need potassium, I would not use that fertilizer. Switch to organics to provide nutrients for your plants and help lower your soil pH. Use those that are nitrogen sources, like bloodmeal, alfalfa, manure composts or fish emulsion. I would be using foliar feeding only for any phosphorous or potassium needs and that level of iron in the fertilizer could be causing you problems, as iron uptake only occurs at lower pH levels, again use a foliar application if you need it until you can get your bed pH level down to around 6.5 pH. I would start applying epsom salts annually. Maybe the Hooker formula would be good for you; look into it. But definately, start adding aged pine bark nuggets into the beds as you prepare them to keep the soil permeable and compost, compost, compost!

Ed, thanks for the advice. My soil PH runs very high, around 8.2. I live on a gyp hill, about 2 spades down is white clay. I have spent 48 years here trying to get my soil to where I can be happy with what I grow. I use a lot of alfalfa based compost with manure and some mushroom compost too.

I did pour some Miracid around 2 daylilies and I can see green coming at the bottom of the plants.

I grow a lot of different things, not just daylilies. Peonies and iris looked good this spring, no troubles there. What baffles me is having a yellow leaved plant surrounded by healthy ones.

I will look up the Hooker formula.

I had similar problems when I lived in Houston with black gumbo clay soils. I went to 8-12" raised beds to improve soil conditions.

I can also say that certain cultivars will have more tendency to display yellow green foliage than others. That may be part of what you're seeing. I know one of a good friends introductions is chronically yellow every spring till temps get warmer, no matter what he does.

I live in Dodge City, what part of OK do you live in? Only 4 blocks from me my daughter has wonderful soil. there's no justice.

I suppose a lot of this is weather related. We have had extreme drouth, too hot too early(a 90 degree day in Feb) too cold, and now too much rain.

We live in Sulphur, OK. I traded the gumbo for very rocky to very silty soil, depending on where on the hill you're at. Yes, agree, there's no justice.