Field Guide

A spiny annual with bright yellow flowers and dandelion-like leaves, buffalo bur is an introduced member of the nightshade family.

Pretty but poisonous, jimsonweed has white goblet-shaped flowers that open around midnight. This native of tropical America was introduced nearly throughout the United States and thrives in disturbed soils.

Horse nettle is a native perennial with spiny stems and leaves, white to purplish flowers, and toxic fruits that look like tiny yellow tomatoes. It does well in disturbed habitats, and many people consider it a weed.

Full grown, water hemlock looks something like a gigantic Queen Anne's lace, but this common, widespread member of the carrot family is the most toxic plant in North America. All parts are deadly. A piece of root the size of a walnut can kill a cow-sized animal.

Native to much of eastern North America, eastern red columbine's range almost matches the breeding territory of the ruby-throated hummingbird, its number-one pollinator. Its bloom time matches the hummingbird's northward migration, too.

Blue false indigo is a native bushy perennial with three-parted compound leaves and showy, upright stalks of blue pea flowers. The seedpods are inflated and turn black upon maturity, and the seeds rattle around in the dry pods.

White wild indigo is the tallest species of false indigo in Missouri. It has a robust, striking presence, with white flowers and a shrubby look. Look for it statewide, in prairies and glades and along roadsides, streams, and valleys.

Sesbania, a type of legume, may become a troublesome species in wetland communities that are managed for waterfowl.

Wild comfrey has large basal leaves that are soft, hairy, and elliptical with long petioles — they look like hounds’ tongues! The upright flowering stalk has few leaves and looks like a wand.

Star of Bethlehem is an introduced exotic plant that makes clusters of bright white flowers in the spring. It reproduces prolifically by forming a multitude of bulbs underground.