- Lonicera maackii is a woody perennial shrub that can grow up to 16.5 ft. (5 m) in height.
- The oppositely arranged leaves are ovate to lance-ovate in shape and measure 1.3-3.3 in. (3.5-8.5 cm) long. The tips of the leaves are acuminate. The leaves are dark green above and lighter on the lower surface. The veins of the leaves are pubescent.
- The white flowers are found in erect pairs that are on peduncles shorter than the petioles. The flowers measure 0.6-0.75 in. (1.5-2 cm) long and are bilabiate. The flowers appear on the plant from late May to early June, which is later than the other honeysuckles.
- The fruit are dark red in color, spherical in shape and measure 0.25 in. (6 mm) in diameter. The fruit become ripe on the plant in the late fall.
- Ecological Threat
- Lonicera maackii can form large stands that prevent native shrubs and herbaceous understory plants from growing. The fruits persist on the branches into the winter, when birds feed on them. In the spring, Lonicera maackii is one of the first plants to leaf out, giving it a competitive advantage. This shrub can bear fruit when it is as young as 3 to 5 years old. Though Lonicera maackii has not yet become a major problem in New England, it is very troublesome in the southern and midwestern parts of the country.
- Nonnative Invasive Plants of Southern Forests - USDA Forest Service
- Southeast Exotic Pest Plant Council Invasive Plant Manual - SE-EPPC
- Invasive Plant Atlas of New England - University of Connecticut
- Element Stewardship Abstract - The Nature Conservancy
- Weeds Gone Wild: Alien Plant Invaders of Natural Areas - Plant Conservation Alliance
- Weed of the Week - USDA Forest Service
- Weed of the Week - USDA Forest Service
- Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- City of Ann Arbor Michigan Parks and Recreation
- Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
- Connecticut Invasive Plant List
- Connecticut Invasive Plant Working Group
- Delaware Natural Resources and Environmental Control, 2004
- EDDMapS Ontario
- Faith Campbell, 1998
- Georgia Exotic Pest Plant Council - Category 2
- Great Lakes Early Detection Network
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Indiana Native Plant and Wildflower Society
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- Jil Swearingen, personal communication, 2009-2013
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Kentucky Exotic Pest Plant Council - Severe Threat
- Maryland Cooperative Extension Service. 2003. Invasive Plant Control in Maryland. Home and Garden Information Center, Home and Garden Mimeo HG88. 4 pp.
- Maryland Department of Natural Resources, 1994
- Massachusetts Noxious Weeds
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Missouri Department of Conservation,
- New Hampshire Restricted Invasive Species
- New Jersey Department of Agriculture, Division of Plant Industry, 2004
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pennypack Ecological Restoration Trust, Pennsylvania.
- Reichard, Sarah. 1994. Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
- Tatyana Livschultz, Pennsylvania survey of invasive plants,
- Tennessee Exotic Pest Plant Council
- Tennessee Noxious Weeds
- Vermont Department of Environmental Conservation
- Vermont Noxious Weeds
- Virginia Invasive Plant Species List
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Wisconsin's Invasive Species Identification, Classification and Control Rule
CategoriesCategory: Shrub or Subshrub
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|