Yellow Rocket (Barbarea Vulgaris)
Its hard to miss this plant in the middle of spring. The bright and abundant yellow flowers dominate the roadsides and waste places. It is yet another one of aggressive, introduced members of the Brassicaceae we see so often in this state. Care should be taken not to spread the plant. The leaves can be eaten but have a sharp, bitter quality.
Structure: 1′ to 2′ tall if not mowed, otherwise rosette only
Life Cycle: Biennial or perennial
What To Look For: Shiny round, bright green lower leaves, yellow flowers at end of stalks
Growth Period: All summer long