Distinctive leaf shapes of Crowdipper.
The underside of Mugwort leaf is whitish.
Mile-a-minute weed climbing into trees.
The Weed Science Program develops educational programs and
conducts applied research in weed biology and management for growers of
vegetables, grapes, turf, and ornamentals in the field, containers, and
in the landscape.
Growers and end-users of
horticultural products are constantly confronted with potential loss of
quality and economic value due to weed competition. Additionally, great
concern about the potential contamination of the single source aquifer
from which Long Island draws its drinking water has resulted in a desire
to reduce pesticide use. The weed science program is continually
evaluating new and alternative weed management methods to address these
- Applied Research: Investigate both traditional weed
control approaches and alternative and cultural methods to address weed
management problems through research.
- Educational Extension: Disseminate information
through articles in trade journals, illustrated lectures, fact sheets,
weed identification gardens, and website contributions.
authors to several publications including two of the Cornell Pesticide
Management Guides, for Commercial Production of Trees and Shrubs and for
Production and Maintenance of Herbaceous Perennials.
- Advisory: Advise legislative and municipal agencies
such as the New York State Department of Transportation and the Long
Island Invasive Species Management Area, a consortium developing an
invasive species management plan for Long Island.
Horticulture Diagnostic Labs
Two locations to serve the industry and gardeners throughout Suffolk County.
Our Cornell University research based Horticulture Factsheets provide answers to homeowner’s most common questions.
Last updated March 13, 2017