Cornell Cooperative Extension

Nassau County
cold frames with flats of small plants, at the CCE-Tompkins Education Center
Image by Sandy Repp

Learn the first and last dates to plant veggies in our area.

pansies
Image by Sandy Repp

Pansies are an annual that provides early blooms.

Plants in Cornell Plantations (PLTNS) greenhouses (Cornell University Photography)
Image by Lindsay France

Coleus plants in a greenhouse

Japanese beetle
Image by Kansas Department of Agriculture Archive, Bugwood.org

on how to control Japanese beetle

Gardening

Cornell Cooperative Extension of Nassau 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 and tours all year long, and opportunities to share your love of gardening as a volunteer! Call us or come by today!

perennial gardening

Be A Member!

If you work in commercial horticulture, or you're a homeowner who enjoys gardening, consider the many benefits of our Horticulture Membership programs.

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Pachysandra terminalis ground cover

Fact Sheets

Many new fact sheets have been added to this section of our web site to provide you with even more up to date horticulture information.

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Minns Garden on the Cornell University campus (Cornell University Photography). garden bench, container garden

Gardening Presentations

Our Master Gardener volunteers are available to speak to community groups on a range of topics, including how to make striking container gardens!

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Adult Japanese beetle Popillia japonica Genus: Popillia Family: Scarabaeidae Order: Coleoptera Class: Hexapoda (including Insecta)

What is IPM?

IPM stands for Integrated Pest Management. It is a system for managing pest problems using a range of safe, least-toxic methods. IPM is integrated because it uses biological, organic, cultural, mechanical and chemical options for managing pest problems.

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Frog and Lily Pads on Pond

Water Gardens

Water features are becoming popular in the home landscape. Our resources cover how to plan and build your own water garden.

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close-up photo of soil after tilling

Test Your Soil!

Learn the correct way to gather soil for a soil test at Cooperative Extension, and find out what tests you can have done through our offices.

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Contact

Michael Fiorentino
Natural Resources Coordinator
mf628@cornell.edu
516-565-5265 Ext. 13

Last updated February 2, 2022

Gardening

Find Your Zone!

2012 USDA Hardiness Zone Map

The 2012 USDA Plant Hardiness Zone Map helps gardeners and growers determine which plants are most likely to thrive at a location. For the first time, the map is available as an interactive GIS-based map, for which a broadband Internet connection is recommended. Users may also simply type in a ZIP Code and find the hardiness zone for that area.

Useful Links

image to use in sidebar when linking to Northeast Regional Climate Center at http://www.nrcc.cornell.edu/

Visit the Northeast Regional Climate Center at Cornell University.

Events

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Visit Cornell Garden Based Learning website

GMPA

Long Island Gold Medal Plant Program