The radially symmetrical flowers are small and tubular with a funnel-shaped corolla that measures 8 mm. in length. The shallow corolla opens into three portions: an upper, three-lobed lip, a middle lobe bearing two yellow spots, and a lower portion comprising of three separated lobes. The corolla surrounds three long stamens and three short stamens and is supported by two bracts: and upper, sheath-like bract and a lower, short, leaf-like bract.
The fruit is small and seed-like.
The basal leaves are large, measuring 10-25 cm. in length, and have long petioles that extend from the submerged base above the water level. Leaves are glossy green and heart-shaped with and indented base.
Pickerelweed is an aquatic plant and so grows best in marshes and shallow, quiet water.
Pickerelweed is an edible plant. The leaves can be eaten as greens and the seeds can be roasted and eaten as nuts.
Pickerelweed is a popular food source for deer.
Pickerelweed receives its name from the pickerel fish, with which this plant is thought to coexist.