Oooh, good suggestions and things I want to get more of, too! Planted my first daylilies last year and I'm afraid I'm hooked! Hmmm, maybe if I tried a low raised bed, along the lines of what Jerry posted (I do love those curved stones) and amended the soil underneath to improve the drainage? I did that for some roses and so far, so good. Sigh, I don't have a whole lot of area suitable for perennials here. Annuals are fun, but they are a lot of work.
