After a very warm day yesterday - 82 degrees! - leaves are popping open in the city of Pittsburgh.
The new leaves pictured here are on a Norway maple in my yard. Norway maples are invasive and can out-compete native trees. This one is a "volunteer" that grew on its own, seeded from a tree that was cut down two houses away to make room for a deck.
If I was a purist I should cut down my invasive "volunteer" but I'm grateful for all the trees in my neighborhood - there are so few of them - so it stays.
(photo by Kate St. John... not a good picture but it's all I can do with my cell phone.)