Thanks for your answers!
I will try to take a pic with no sun, sorry.
Sue, I checked PH the past summer when I started to see the problem and the PH is neutral (it was a big surprise for me but I tested soil and tested the test kit LOL). I know I should make a soil test but I can't afford it. Also, people who makes the anlaysis requires big pots of soil and for me doing so it means to empty completely two or three spots. I don't have a real garden, the place where daylilies are is more like a little flowerbed.
I'm not fertilizing now, I only have liquid fertilizer and it's raining often, after a dry period of a couple of months in november and december.
Will take a pic tomorrow, many thanks!
