Spotted Lanternfly has been found in New York State

Spotted Lanternfly has been found in New York State

Horticulture expert examines specimen in CCE laboratory.
Albam, Kenaley and Giordano discussing beech canker

Horticulturists viewing damage.

Native Plant by Donna Lassiter
Image by Donna Lassiter

Horticulture & Environment

Cornell Cooperative Extension of Westchester County is your resource for information on soils, site improvement, plant selection, proper plant care, eco-friendly practices, integrated pest management, composting and so much more! We offer free or low-cost gardening classes all year long, and opportunities to share your love of gardening as a volunteer! Call us today!


Our lab is staffed by full-time, credentialed professionals.  For your convenience, we accept 24/7 drop offs on site.  Call for information and instructions.

Consumer Telephone Hotline Service:  The hotline is open weekdays 9:00am to 12:00 noon (914-285-4640).

Consumer Sample Drop off or Mail in Service:  FOR THE SAFETY OF THE PUBLIC AND OUR STAFF DURING THE COVID-19 EPIDEMIC, CCE Westchester’s plant and insect walk-in diagnostic and drop off services will be limited to an “appointment only” policy.  For more information call 914-285-4640 or email

You may also mail samples to Cornell Cooperative Extension, 3 West Main Street, Suite 112, Elmsford, NY 10523. Try to mail your samples early in the week (Monday or Tuesday). Download sample submittal forms and review sampling and submittal instructions.



Timely Tips

Beware: Seeds sent from China - unsolicited, mislabeled

Recent Programs and Related Resources

Guide to Farming in NYS

Westchester Horticultural News Archives

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Cornell University Urban Horticulture Institute Resources

Cornell University IPM “What’s Bugging You?” resources

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Energy Savings Tips

Growing Degree Days

Horticulture Newsletter (for homeowners)

Horticulture Diagnostic Forms

Invasive Species


Hillary Jufer
Horticulture Program Manager

Last updated July 12, 2022