Field Guide

Ironweeds are tough, grayish-green, branching plants known for their fluffy-looking clusters of reddish-purple florets. They are a familiar sight on roadsides and pastures. Identify western ironweed by the bracts at the base of the flowerheads.

White snakeroot looks very similar to thoroughworts, but it has triangular leaf blades that are more broadly angled or rounded at the base. White snakeroot is common statewide. It’s a toxic plant if eaten, so it’s good to be able to identify it.

American, or common boneset has small, white flowerheads in flat-topped clusters at the top of the plant. The leaves are hairy, narrowly triangular, and in opposite pairs fused around the stem.

A stout perennial that can grow to 6 feet tall, tall thoroughwort is a member of the sunflower family that has dull white flowers and distinctive leaves that are opposite, slender, very short-stalked, and with three quite noticeable veins.

An invasive native of Eurasia that is spreading in Missouri, musk thistle is a plant you should know. Learn how to tell the difference between our native thistles and these bad guys.

Tall thistle is a native thistle that can grow to be 10 feet tall! To identify it, notice its leaves, which are unlobed (though they may be wavy or have only shallow, broad lobes), are felty-hairy beneath, and have prickles only along the edges.

There are 23 species of goldenrods in Missouri. They can be hard to identify to species, but as a group, the goldenrods are common and nearly unmistakable.

One of several native plants called dandelions, Carolina false dandelion is an annual with sulphur yellow flowers and puffy seedheads.

Golden aster can cover entire valleys with its bright yellow flowers. It blooms June through October and is scattered mostly south of the Missouri River.

White crownbeard is a tall native perennial wildflower with clusters of white flowerheads. It's called “wingstem” for the narrow green wings running along the stem. It’s called “frostweed” because it forms "frost flowers": strange and beautiful formations at the stem bases after a sudden hard frost.