Can I plant a winter daphne in May? Will it do ok?
While, generally, the best time of year to plant anything is in the fall, you can probably get away with planting your daphne now. However, it's important to note that daphnes do like shade, at least partial shade, particularly protection from the hot afternoon sun. You'll want to make sure to pamper your daphne with regular watering, but not too much as you want to avoid the common problem of root rot. Put plenty of mulch around the base of the plant, but make sure the mulch is not up against the main stem, or any other branches. General rule of thumb is 4-inches. The mulch will help to keep the soil cool and minimize watering.
Excellent soil drainage is a must and protection from wind is a good idea. Keep in mind that daphnes are finicky plants and will take a while to get established, but once established can take minimum care. Good luck!