Vickie, I have noticed here that the amount of shade affects bloom time. I have Purple De Oro planted in several locations. Two in same patio area but different locations. The one in the sunniest location blooms first, The one that's up against a fence that blocks late morning/ early afternoon sun starts blooming about one or two weeks later. The one in the most sun finishes blooming before the one by the fence does. Length of bloom time is about the same. Same plant, similar size.
Here are pics, sunny one first, then fence one:
The third one is planted in a shady location. Planted among hostas and Heurcheras. It doesn't get as many blooms as the first two posted but considering in it's in a shady location, it does well.
Based on my observations, the amount of sun effects the timing of the bloom. Too much shade effects the amount of blooms too. Purple De Oro happens to be a cultivar that here tolerates shade well. I have another cultivar, Becky Lynn that's in the same garden as the last shady Purple De Oro but where Becky Lynn is planted, it's in more sun than the Purple De Oro. It didn't bloom this year. I suspect it's because the trees in the woods have grown to shade more of this garden area and Becky Lynn is a cultivar that does not tolerate too much shade. It otherwise looks healthy and is of a size that it should have bloomed.
This season I'm going to leave Becky Lynn where it is and see if it blooms. If not the following year I will plant in more sun. This year I'll also write down the actual dates and sun time of these in order to have more accurate information. I have other daylilies that also do this. South Seas, I have two clumps. The one that recieves about an hour more sun a day, blooms about a week before the other. The amount of blooms are otherwise not affected. It's in half sun/half shade locations. Morning and late shade, sun all afternoon.
