Plant Invaders of Mid-Atlantic Natural Areas - National Park Service

GRASSES & SEDGES
of glyphosate (e.g., Accord® or Roundup Pro®), mixed with water,
according to the label directions. Apply thoroughly just to the point
of drip. Wait 10-14 days and reapply the glyphosate at the same rate.
After the second treatment, leave the bamboo alone. Do not cut, mow,
or remove plant material. The following spring, the bamboo will be
browned out and should not grow back. At this point, you can cut and
remove the dead vegetation. If any bamboo remains or does reappear,
repeat the procedure.
BOG BULRUSH ______________________________________________
See General Guidance.
Manual
Hand-pulling can be effective for young plants and light infestations.
Chemical
For plants with established root mass, treat with a systemic
herbicide such as glyphosate to kill the entire plant to the roots.
Mature seeds may be present anytime from June through October,
depending on local conditions. If present, clip and bag the seed heads.
Power wash any equipment when moving between sites to remove
seeds.
COMMON REED _____________________________________________
Biological
Biological control is not available at this time but is under active
investigation. Finding an appropriate control agent for the U.S. is
complicated by the co-occurrence of native and exotic genotypes.
Chemical
Foliar. Systemic herbicides such as Accord®, Glypro® or Rodeo®
and similar products containing 53-54% glyphosate, which moves
through the plant to kill the roots, are most effective. Products must
be labeled for wetland use. Low rates of herbicide (1.5-2%) mixed
with water and a low toxicity surfactant approved for wetland
use, can be applied to foliage using a backpack sprayer or powerdriven
hand sprayer. The most effective timing for treatments
is after flowering into the fall, but applications can be made from
June and early October as long as plants are actively growing and
not under drought stress. Annual followup treatments should be
made after July to allow for sufficient regrowth of plants affected
by previous treatments and may be slower to emerge. For large
infestations, truck-based applications or aerial treatments are
the most practical and can be highly effective. The U.S. Fish and
Wildlife Service, Chesapeake Bay Field Office, uses 1.25% glyphosate
mixed with water and 0.625% surfactant (e.g., LI-700® made by
32