Field Guide

Starting more than a century ago, this nonnative rose was planted across America — for many good reasons — but multiflora rose has proven to be invasive, and now the goal is to stop its spread.

Our state flower, the hawthorn, is solidly represented in Missouri. There are about 100 different kinds of hawthorns that occupy almost every kind of soil in every part of the state. These members of the rose family are closely related to apples.

Exotic willows are available at lawn and garden centers, but there are several willow species that are native to Missouri. Most are rather humble colonizers of gravel bars, riverbanks, and lakesides. Many are important for human economic interests. All have a place in our wild ecosystems.

Identify sandbar willow by its very narrow leaves with widely spaced, slender teeth along the margins. This is a good soil binder and bank stabilizer; it prevents washing and erosion of alluvial soil.

Poison ivy is a toxic plant that contains an oil in all its parts that, if you come into contact with it, can cause an intense skin reaction. Learn to recognize it, and sidestep it on your outings.

An attractive shrub with wide-spreading, graceful, recurved branches and bark peeling off in conspicuous thin strips, ninebark is found throughout southern and eastern Missouri on gravel bars, rocky stream banks, and bluffs along streams. It's very popular as a native landscaping shrub, too.