Invasive Plants or Trees

Since its debut as a regular Branching Out feature in 2016, "Invasives in Your Woodland" has profiled a wide variety of invasive plant species that threated the health of Maryland's ecosystems.

Japanese hop is a native of Asia and was imported to North America as an ornamental plant and for Oriental medicinal purposes in the late 1800s. It is an annual vine that can climb or twine around trees, fences, and more. It also spreads rapidly across open spaces and can overgrow and shade out native species in the understory.

Sawtooth oak (Quercus acutissima) is native to Asia, from northeast India to Korea, and was introduced to the eastern U.S. in 1920. However, sawtooth oaks have adapted to a wide area of the nation and now are escaping from plantings into natural areas, particularly in the eastern states, where they can outcompete native species.

In this issue: Read about the renewal of spring, and the prospect of bringing an iconic species back to Appalachia. There's news about a tree planting grant program and about a record year for fighting invasives. Our "Native Trees of Maryland" looks at the tuliptree, and "Invasives in Your Woodlands" looks at the non-native sawtooth oak. And don't forget the events calendar and the Brain Tickler challenge.

Montgomery Parks has announced a record-breaking year for its Montgomery Parks Weed Warrior Volunteer Program, galvanizing the county in the fight against non-native invasive plants.

Tree-of-heaven has been receiving a significant amount of attention lately, and not just because it is a fast-spreading invader of woodlands throughout the mid-Atlantic states and beyond. the recent discovery of a new invasive insect in Pennsylvania, and its subsequent spread into adjoining areas, has lent new voice to advocates for the plant’s removal. Spotted Lanternfly, a recent arrival from Asia prefers tree-of-heaven as its host. This has led to an increased movement to remove tree-of-heaven from the landscape.

In this issue: Read about a few changes taking place, in the newsletter and more. Register now for the Spring session of our "The Woods in Your Backyard" online course, and learn about upcoming webinars. Our new feature, "Native Trees of Maryland," looks at the state tree: the white oak.  "Invasives in Your Woodlands" looks at wineberry. And don't forget the events calendar and the Brain Tickler challenge.

Back issues of the Branching Out newsletter can be found on this page.

The wineberry is non-native and invasive. This Asian native was imported to the United States in 1890 by berry growers. They wanted to use it as breeding stock with native raspberries, but it escaped from cultivation and was first observed in natural areas in the 1970s.

The white mulberry reached our shores during the colonial period. This invasive plant is found in every Maryland county.