Spotted Lanternfly has been found in New York State

Spotted Lanternfly has been found in New York State

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.

Consumer Telephone Hotline Service: The hotline is open weekdays 9:00am to12:00 noon (914-285- 4640)


Both consumers and industry individuals can utilize our diagnostic services for:

  • Diagnosing plant problems and diseases for indoor and outdoor plants
  • identifying garden insects, structural insects and tick specimens.
  • In house pH testing with amendment recommendations
  • Facilitate further testing through off-site university lab testing for nutrient levels,contaminants etc.

To drop off a sample:

In Person: Complete the form corresponding to your problem, andc all(914)285-4640 or email to schedule an appointment for drop off.

After hours: Put sample, form, and payment (check or money order) in the clear bin labeled “Hort Samples” located at the loading dock in between building 3 and 5. Call the next day to verify we have received your sample (914)285-4640.

By Mail: Wrap samples in newspaper and place in padded envelope or box. Send to ouraddress, 3 West Main Street, Suite112, Elmsford, NY 10523,“Attention Horticulture”. Sending samples at the beginning of any given week is preferred. Early week overnight delivery of a fresh sample is best. Avoid sending plant samples over holidays.



Timely Tips

Guide to Farming in NYS

Westchester Horticultural News Archives

Cornell University Turfgrass Program resources

Cornell University Urban Horticulture Institute Resources

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

What is Energy Star

Energy Savings Tips

Growing Degree Days

Horticulture Newsletter (for homeowners)

Invasive Species


Hillary Jufer
Horticulture Program Manager

Last updated May 16, 2024