Field Guide

In summer, you’re almost guaranteed to see big colonies of crown vetch along Missouri's highways. This weedy nonnative plant stabilizes the dirt after road construction but degrades our natural ecosystems.

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.

Moth mullein is a native of Eurasia introduced to our continent in the early 1800s. Since then, it has spread across North America. It’s named because the fuzzy flower, with 2 antennalike stamens, looks something like a moth.

Our most widely distributed early spring flower, spring beauty has 5 white or pink petals with distinct pink veining, and 5 pink anthers. The narrow, bladelike leaves are fleshy. These flowers often grow in abundance, covering a patch of ground with the beauty of spring.

Rough blazing star is fairly common and scattered nearly statewide. To distinguish between Missouri’s nine species in the genus Liatris, start by noting details of the flower structure. It’s not hard when you know what to look for.

Called “crane’s bill” for its sharply pointed seed capsules, wild geranium is a gardening favorite, and there are cultivated varieties of this woodland wildflower bred for unique petal and leaf colors.

Mayapple is a common spring wildflower that makes its biggest impression with its leaves, which resemble umbrellas arising from a single stalk. It often grows in colonies.

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.

Hibiscus in Missouri? You bet! Hairy rose mallow is a native perennial whose 6-inch-wide blossoms look a lot like those of its tropical relatives. The stalks can get woody and can grow to 8 feet tall.

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.