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Cornell Cooperative Extension

Suffolk County

  • Agriculture
  • Community Education
  • Gardening
  • Horticulture Labs
  • Marine
  • Energy
  • County Farm
  • 4-H
  • Peconic Dunes
  • Recursos en Español
  • Home »

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Events

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Office Closed for Winter Holidays

Wednesday, December 24, 2025

The offices of Cornell Cooperative Extension of Suffolk County will be closed for the Holidays.

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holiday lights

Office Closed for New Year's Day

Thursday, January 1, 2026

The offices of Cornell Cooperative Extension of Suffolk County will be closed for the New Year holiday.

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COASTAL GARDENING

Saturday, January 31, 2026

GARDENING IMPACT ON ECOSYSTEMS Our proximity to bodies of water including the Long Island Sound presents an opportunity to make wise choices about how we garden, enrich soil and maintain water quality.The 2026 COASTAL GARDENING course offering is a mix of in-person sessions, online learnin...

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coastal-friendly yard rectangle

COASTAL GARDENING

Saturday, February 28, 2026

GARDENING IMPACT ON ECOSYSTEMS Our proximity to bodies of water including the Long Island Sound presents an opportunity to make wise choices about how we garden, enrich soil and maintain water quality.The 2026 COASTAL GARDENING course offering is a mix of in-person sessions, online learnin...

Read more

coastal-friendly yard rectangle

COASTAL GARDENING

Saturday, March 21, 2026

GARDENING IMPACT ON ECOSYSTEMS Our proximity to bodies of water including the Long Island Sound presents an opportunity to make wise choices about how we garden, enrich soil and maintain water quality.The 2026 COASTAL GARDENING course offering is a mix of in-person sessions, online learnin...

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Cornell Cooperative Extension
Suffolk County

Extension Education Center
423 Griffing Avenue, Suite 100
Riverhead, New York 11901-3071
TEL: 631-727-7850
suffolk@cornell.edu
Hours: 8:30am-4:30pm

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