Jefferson is a Howard University alum who became the first Black botanist for the National ... the health of the district's iconic cherry trees, which were gifted to the American people by Japan ...

This week, we meet Black willow or Salix nigra. The black willow is one of several species of willow in Indiana, but it is the only tree-sized willow in the state. This species has long, narrow leaves ...

The bark has long, strong running ridges and in older trees can resemble alligator hide. Under the surface of the bark is a dark, chocolate brown color. Black walnut trees produce nuts, which are ...