Hi there Susie! Welcome!
Realizing that I live in the north, on the daylilies I had this year that didn't seem to do well, I hit them with a daylily booster recipe I got off of Tinkers. The recipe is as follows: 1 tsp Epsom salt, 1 oz sorghum molasses (I used the molasses in my kitchen cupboard!) 1 TBS baking soda, all in 1 gallon of water. Worked wonders and really boosted those couple of plants I tried it on. Wish I had found this recipe earlier - perhaps I wouldn't have lost a plant I had bought that never did well. I used it on a seedling that didn't do well after transplanting, and a couple of established plants that I moved. Really perked them up. Since you live so close to Lyle, bet he has some suggestions that could help you with that one that is struggling. ~Jan