[Smilax rotundifolia L.]
is a perennial woody vine that often climbs other vegetation. The broad
heart-shaped leaves are shiny and have parallel venation and smooth margins.
The stems have many sharp prickles along their entire length. Greenbriar can
form thickets of vegetation in undisturbed sites, as well as in open landscapes
and nursery areas.
has no hairs, but very prominent thorns and prickles
1 to greater than 2 inches
fibrous; very "woody"; may also be found with white
yellow; yellowish brown
Note: Still not
sure this is the right weed? The Turf
& Weed Identification Decision Aid may help. Check the TurfFiles glossary for definitions
of unfamiliar terms.
is a difficult-to-control perennial woody vine that often climbs other
vegetation. Perennial broadleaf weeds are capable of living more than two
Two, three or four way herbicides
only containing 2,4-D, MCPP, MCPA, or dicamba are not effective on greenbriar.
Partial control may be obtained with combinations of triclopyr (e.g., Turflon
Ester) + 2,4-D or nonselective herbicides including glyphosate (Roundup) or
imazapyr (e.g. Arsenal).
Recommendations of specific chemicals are based upon information on the
manufacturer's label and performance in a limited number of trials. Because
environmental conditions and methods of application may vary widely,
performance of the chemical will not always conform to the safety and pest
control standards indicated by experimental data. The order in which brand
names are given is not an indication of a recommendation or criticism.
Recommendations for the use of
agricultural chemicals are included in this publication as a convenience to the
reader. The use of brand names and any mention or listing of commercial
products or services does not imply endorsement by North Carolina State
University or discrimination against similar products or services not
mentioned. Other brand names may be labeled for use on turfgrasses. Individuals
who use agricultural chemicals are responsible for ensuring that the intended
use complies with current regulations and conforms to the product label. Be
sure to obtain current information about usage regulations and examine a
current product label before applying any chemical. For assistance, contact
your county's Cooperative Extension agent.
© North Carolina State University. This information sheet was prepared
by Fred Yelverton, Bridget R. Lassiter, Gail G. Wilkerson, Leon Warren, Travis Gannon, Jenifer J. Reynolds, and Gregory S. Buol. Department of Crop
Science, College of Agriculture & Life Sciences, North Carolina State
University. Prepared July 15, 2008. Available on-line at
www.turffiles.ncsu.edu. This publication was made possible through a grant
provided by the Center for Turfgrass Environmental Research & Education
(CENTERE) whose purpose is to support worthwhile projects that will benefit
both the private sector and the public, and protect the environment.