Chokecherry blooms, first three photos.
Lavender lilac blooms, fourth photo. The lilac is in full leaf and bloom, while the black walnut tree to its left still has scant budding leaves.
Red elderberry in bloom at the base of a Norway spruce tree, fifth photo. This red elderberry bush is in full shade. Meanwhile, red elderberry bushes in full sun have already ripened deep red fruit.
The chokecherry, lilac, and red elderberry are northern PA photos. The final photo is a field of skunk cabbage in central New York state.