Last week Pittsburgh's trees took on color and shape after a long brown winter.
A week ago the redbud trees had closed pink buds that made their branches look magenta from a distance.
Now the flowers are open and the trees are lighter pink.
Meanwhile the hillsides have changed from uniform winter brown to individual, spring-green trees as seen from Downtown on Saturday.
The earliest colors are usually pale green flowers.
If you haven't been paying attention, your nose knows the trees are blooming. Welcome to pollen season.
(photos by Kate St. John)