What is an Invasive Plant?
Invasive plants pose a serious risk to ecosystems in Virginia. These plants are non-native or introduced to an ecosystem and can cause economic or environmental harm. They are costly to control, reduce productivity within forests, can grow faster than native species, and spread quickly. Invasive plants can be trees, shrubs, grasses, or other herbaceous species. There are many species of invasive plants that threaten Virginia’s forests and landscapes, as well as tools to help identify and combat these species.
Identification of Invasive Plants in Virginia
Some examples of common invasive species found in Virginia are tree-of-heaven, mimosa, chinaberry, Japanese honeysuckle, oriental bittersweet, autumn olive, kudzu, Japanese stiltgrass, and multiflora rose.
|Invasive Plants – Help Stop the Spread||P00216|
Brochure educates citizens about invasive plants, including what makes an plant invasive, the problems they cause, characteristics, and how to stop the spread of invasive plants. Printed copies available.
|Virginia Invasive Plant Species List|
The Virginia Department of Conservation and Recreation maintains the invasive plant species list.
|Virginia’s Least Wanted – Invasive Plants||PST004|
Poster helps identify invasive plants, which threaten our forest ecosystems. Designed for 24 in. x 36 in. poster. Target audience: Youth – elementary age.
Control of Invasive Plants in Virginia
The first action everyone can take to help with controlling invasive plants in Virginia is to avoid introducing new invasive plants; always plant native plant species. History has taught us that the permanent eradication of a weed species from a geographic region is not a realistic goal. However, there are treatment and control options to reduce or eliminate invasive plants in a limited area.
|Ailanthus Control Methods||FT0055|
Forestry topic information sheet provides information about the invasive species Ailanthus and possible methods for removing or controlling Ailanthus, including manual as well as chemical methods such as foliar spray, stem injection or basal spray.
|Control and Utilization of Tree-of-Heaven: A Guide for Virginia Landowners||P00144|
Publication provides landowners comprehensive insight to this invasive species, including biology and life cycle, control and elimination methods, utilization of ailanthus, and other resources available. Printed copies available.
|No. 145 Triclopyr Ester for Controlling Tree-of-Heaven||RR-145|
Report proivdes results from a series of four studies of tree-of-heaven control using triclopyr ester applied at different times during the year by basal spray or cut stump application methods. A mixture of 25% triclopyr ester herbicide in an oil-based carrier achieved excellent tree-of-heaven control for trees up to 16 inches in diameter.
|Non-Native Invasive Plant Species Control Treatments – Timing Methods and Herbicide Rates||FT0031|
Forestry topic information sheet provides information about possible control treatments for some of Virginia’s most common non-native invasive plant species.