I always use alfalfa pellets for my daylilies, and they love the stuff. The only other thing I use is seaweed fertilizer, but I don't use that regularly. Usually in the Spring only, and I add it to the water when watering them in when first planting, but if a daylily looks to be struggling, I'll give it an extra shot of that. When planting, or transplanting, I just toss a handful of alfalfa pellets into the planting hole, cover it with a little soil, and then plant the daylilies. I also top dress with it. Supposedly, you can't use too much, so I never worry about how much I use.
