I guess the first "W" word to pop in my mind would be weather. I am like most gardeners constantly aware of the weather. Always checking the temp., the rainfall, the wind etc. My gardening day is always started out by checking the weather. Is it too wet to dig, too dry to divide, too cold to be out...things like that. The good thing is that the daylilies seem to take it all in stride, and be able to tolerate most conditions and to adapt by going dormant in the worst of conditions, but the best part is to be able to flourish in the best of conditions.
