Hoping someone can shed some light on this. We've had this daylily about a year. It was in a cedar container with some other plants. It did ok in the cedar planter, or at least I thought so, I have no experience with them so I had nothing to compare it with.
This year I did some rearranging of plants in the cedar planter. I removed all the potting soil and tossed it because there used to be an orange trumpet vine in the same planter and it formed a mat of roots on the bottom. I put the daylily in a large terra pot with fresh potting soil and a bit of soil amendment. It looks like a different plant, almost overnight the leaves and stems grew much taller. I don't have a before picture, but here's the after picture, it's about twice the height it used to be and much healthier looking.
So my question is, does potting soil eventually wear out or something? Or maybe some of the other plants in that same container were crowding it? I had the same kind of success when I moved a couple of Aquilegia plants from the ground to the cedar container.