The Princeton Invasive Mapping Program has recently completed percent cover maps for privet, kudzu, and cogongrass across the Southeast. The maps are based on data contributed by many invasive plant experts from around the Southeast. You can download these maps and all associated data at http://invasive.princeton.edu.

The maps provide a regional view of these species at a six-kilometer resolution. We hope they will be useful for identifying invasion hot-spots, coordinating management efforts across the region, and attracting funding and political support for containment and restoration efforts. Please visit http://invasive.princeton.edu to view and download the maps/data. We will be updating the maps periodically, so you still may sign up and contribute through our website.

Georgia Department of Agriculture
Tommy Irvin, Commissioner
19 Martin Luther King Jr. Dr. SW
Atlanta, GA 30334

PRESS RELEASE                                 
FOR IMMEDIATE RELEASE
For information contact: Arty Schronce, Tyler Adams, Jackie Sosby or Yao Seidu (404) 656-3689

Ga. Dept. of Agriculture

Bans sale of Cogongrass

The Georgia Department of Agriculture has issued a statewide ban on the sale of Cogongrass, a non-native and aggressively invasive species of grass.

Cogongrass (Imperata cylindrica) is already listed as a noxious weed by the United States Department of Agriculture and is therefore illegal to transport across state lines.

The new action makes the growing, cultivation or sale of the plant a violation within the state of Georgia.

The grass is sold under the names Japanese blood grass and Red Baron grass.  There is a reddish tint to the leaves which accounts for its name and sole ornamental quality. Cultivars such as ‘Red Baron’ are thought to be sterile (producing no viable seed), but long-term behavior of the plant is unknown. Cultivars of the grass have demonstrated aggressive spreading by their roots.  They will also sometimes revert to green.   

State and federal agencies have been working together for four years to detect all known Cogongrass infestations and to eradicate them. 

Cogongrass can form a dense mat that makes it nearly impossible for other plants to coexist.  It disrupts ecosystems, reduces wildlife habitat and decreases tree seedling growth.  “Think of kudzu as a grass,” said Commissioner of Agriculture Tommy Irvin.

This ban is part of an ongoing effort among the nursery industry, USDA Forest Service, University of Georgia Center for Invasive Species and Ecosystem Health, Georgia Department of Agriculture and Georgia Forestry Commission to prevent further introductions of cogongrass into the environment.

The Georgia Department of Agriculture has 24 inspectors that will enforce the ban and help educate nurseries and garden centers about this new regulation.

“Georgia garden centers and nurseries are stocked with plenty of other ornamental grasses or other plants that will substitute for these grasses,” said Commissioner Irvin.   “Everyone agrees this is a wise precautionary measure.”

Interesting article from WSSA here.

To read or listen to a NPR segment on invasive plants, go to: http://www.npr.org/templates/story/story.php?storyId=89696711

Check out the new deck of Recognition Cards published by the University of Florida's IFAS Center for Aquatic and Invasive Plants at: http://plants.ifas.ufl.edu/reco_cards.html

Cards include an identifying photograph, botanical description and size reference, ecological threat, distribution within Florida, and an eraseable area for field notations. Covers 80 invasive plant species in Florida (many extend to other southeastern states as well).

This guide is intended to aid foresters and managers in the southeastern United States in developing management plans and managing forests threatened by invasive plants. This guide integrates identification of invasive plants, potential mechanisms for spread (natural seed or vegetative production, or human induced spread by cultural practices) and a suite of silvicultural management/control practices. The first section of the guide includes simple descriptions of common silvicultural practices and how they alter the habitat. General guidelines for reducing the risk and impact of invasive plants are included in a bulleted list format. Profiles for thirteen common invasive plants give detailed information on identification and ecology as well as how they are expected to respond to the habitat alterations resulting from silvicultural practices. Quick reference tables summarizing the information in this book and allow the user to quickly find information and recommendations for each of these common invasive plant species are included in the back of this publication.

Available online at: http://www.invasive.org/silvicsforinvasives.pdf 

Proceedings of the Regional Cogongrass Conference: A Cogongrass Management Guide

Confronting the Cogongrass Crisis Across the South

Edited by Nancy J. Loewenstein and James H. Miller

Available online at: http://www.cogongrass.org/conference.cfm

New publication from USGS, available online at: http://www.glsc.usgs.gov/_files/factsheets/2007-2%20Identifying%20Bittersweet.pdf

35th Natural Areas Conference
Natural Areas Revival In Music City: Tuning into a changing climate and biological invasion

A Joint Conference of the Natural Areas Association (NAA) and
the National Association of Exotic Pest Plant Councils (NAEPPC)

Hosted by the Tennessee Department of Environment and Conservation (TDEC)

 

The Doubletree Hotel - Nashville, Tennessee at the October 14 - 17, 2008

Join us for the 35th annual Natural Areas Conference and the NAEPPC inaugural national conference. The conference will focus on ecological management themes with an emphasis on invasive exotic species issues and the effects of climate change. The NAEPPC will bring its invasive species expertise to the conference and the two organizations will provide synergy in organizing what is expected to be an outstanding event. The plenary and concurrent sessions will address the conference theme tuning into a changing climate and biological invasion. Stay tuned to the NAA website www.naturalarea.org for details, and join us in Nashville for an informative and rewarding experience.