I have had several varieties of daylilies for decades then three years ago I got hit with gall midge.
Right now I have three yellow plants and I had to remove two buds I thought might be infected but it has started to bloom and looks good. Right next to them I have some pink plants and they have the midge. Plants that I have had for 30+ years are being hit the hardest as well as some plants I have had for 20+ years. This year I am not just taking off infected buds, I'm cutting off whole stems. Is there no systemic or something to stop this? This may be the year I dig them all up and find something else to fill the space.
