Field Guide

Anyone who’s seen what purple loosestrife has done to New England and the Northeast can tell you how invasive this plant is. Learn how to identify it, so you can report any findings to the Missouri Department of Conservation.

Swamp milkweed has pink flower clusters at the tips of its tall stalks. The leaves are opposite, narrow, and up to 6 inches long. It grows in moist bottomland soils.

Soapwort is a tall, showy wildflower that has chemicals in its sap that lather up like soap. Native to Eurasia, it has been introduced worldwide and is a common roadside wildflower.

False dragonhead is called "obedient plant" because when you push one of the flowers sideways, it "obediently" stays in place for a while.

Indian hemp is a shrubby, upright perennial with opposite branches and milky sap. This native plant can be a troublesome weed in crop fields and gardens, but Native Americans used its tough, fibrous stems for rope-making.

Square, unbranching stems, opposite leaves, two-lipped flowers, and a mild minty fragrance are clues Ohio horsemint is in the mint family. Tight, rounded flower clusters are stacked atop one another at the stem tips.

Common in almost any kind of moist, wet or muddy habitat, fog fruit bears interesting round, purple flower heads that are ringed by small, white or pinkish flowers.

Winged loosestrife is a native Missouri wildflower that should not be confused with the nonnative invasive purple loosestrife. Learn to distinguish between the two so you can report infestations of the latter!

Bees, butterflies, and other insects love its nectar, but sand vine is also a problem weed that can be difficult to eradicate. Some people cultivate it as an ornamental. Beekeepers value it as an excellent honey plant.

Common milkweed is famous as a food plant for monarch butterflies. It bears curious seedpods bearing seeds that fly on silky parachutes. It's common statewide in a variety of habitats.