INVASIVE PLANTS!!! Watch out for these offenders!!!

Autumn-olive, Elaeagnus umbellata

Autumn-olive is a deciduous shrub that occurs naturally in Asia and introduced to the United States in the 1830s. This species is easily identified by the bright model-brown stems that can also exhibit thorns. Leaves are green on top and often have a shimmery appearance. Fruits are edible and juicy- often made into jams! The Soil Conservation Service used to plant this species to combat erosion along roads and bridges (The Nature Conservancy).

 

Multiflora Rose, Rosa multiflora

What an easy common and scientific name, huh!? This species natively grows in China, Japan and Korea, but was introduced to the United States in the 1860s. This member of the rose family climbs like a vine through the sub-canopy. Leaves are formed in pinnate compounds. Tendrils are obvious at the base of leaves. Bad conservation management is the root of the widespread invasion of this species through much of the United States. In fact, some states’ highway departments used multiflora rose in medians to reduce the glare of incoming car lights and to provide a safe barrier of thickets that would slow cars to a stop in the case of a crash (Ecological Landscape Alliance).

Siberian Elm, Ulmus pumila

Siberian elm was introduced from Asia. One of few elms with single-toothed leaves. Leaves are small, alternate and hairless. Twigs are hairless and short. Fruits are a single, papery circle with a small notch at the top. Siberian elm is resistant to Dutch Elm Disease and is used to hybrid other elms to develop this same resistance (USDA).

White Mulberry, Morus alba

This mulberry has an Asiatic origin and can be hard to distinguish from the native red mulberry. in Brown, dome-like buds that come to point. Leaves shiny and bright green on top with a white, sometimes slightly hairy underside. Leaves come in a variety, but can be identified by their 3-5 lobes with finely toothed margins. This species was introduced to America by the British in an attempt to start a silkworm industry (Petrides, 1986).