Hairy Bittercress is one of our first spring flowers, often popping up in late winter. A little later in the spring, when daffodils are in bloom, it has developed taller stalks and is starting to grow its linear seedpods.

This lush patch was growing in Bird Park, Mount Lebanon.

For a fuller description, see the page on Cardamine hirsuta at the Flora Pittsburghensis reference site.