Field Guide

Colonies of smooth sumac are most noticeable in early autumn, because the leaves turn brilliant red! You can make drinks and jellies from the clusters of fuzzy red berries.

Amur corktree is a non-native tree that is becoming naturalized in our state. Originally introduced for landscape planting, it has proven itself invasive in the northeastern United States and has shown invasive tendencies in St. Louis.

By far the most common native conifer in the state, eastern red cedar is useful for its aromatic, red wood and beloved for its greenery, its resinous blue “berries,” and the spicy odor it lends the outdoors.

You might see common buckthorn for sale at a nursery, but don’t buy it! At least six states have banned this invasive exotic, and the difficult-to-control plant is causing problems here in Missouri, too. Learn how to identify it — and avoid it!

Russian olive is a small tree with distinctive silvery leaves. It was introduced to America in the late 1800s and widely planted as an ornamental and windbreak. But in many states it has proven to be invasive. It is not recommended here in Missouri.

Winged sumac is most common south of the Missouri River. The "wings" in the name refer to the narrow, flattened leafy structures running along the central stems of the compound leaves.

Dogwoods usually have leaves arranged opposite one another on the stem, except for the alternate-leaved dogwood! This shrub or small tree is a popular ornamental, especially in the northern parts of Missouri, where it can be too cold to grow flowering dogwood.

Autumn olive can be found all over the state, since it was planted widely with the best of intentions. Despite its “pros,” this shrub has proven to be very invasive. It threatens native ecosystems and should not be planted.