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Events

Holiday Greetings from a vintage holiday card

Offices Closed - Christmas

Thursday, December 25, 2025

The offices of Cornell Cooperative Extension of Nassau County and DPF 4-H Camp will be closed for the Christmas Holiday on December 25th. Happy Holiday!!!

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New Year graphic

Offices Closed - New Years Day

Thursday, January 1, 2026

The offices of Cornell Cooperative Extension of Nassau County will be closed on Thursday, January 1st. Happy New Year!!!

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caution sign re: pesticide use

​30 Hour Pesticide Training Course - January 2026

Wednesday, January 7, 2026

FOR ORNAMENTALS AND TURF CATEGORY 3AOnlineJanuary 7, 14, 21 & 288:00am to 5:00pmPresenter: Arnie Linzer This course is approved by the New York State Department of Environmental Conservation (DEC) and requires anyone supervising or applying pesticides to ornamental and turf to take a 30 Hour Pest...

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canning workshop

​Local Producer Education Series

Wednesday, January 7, 2026

Join CCE Nassau County, Taste NY, and fellow Long Island producers once a month for an evening of learning, networking, and expert insights to help take your business to the next level.Location:Cornell Cooperative Extension Nassau CountyEisenhower Park, Special Activities Building, Parking Field ...

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winter market 2

Winter Market at Eisenhower Park

Saturday, January 10, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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caution sign re: pesticide use

Herbicides 101

Thursday, January 15, 2026

Certified Pesticide Applicator Training CourseHERBICIDES 101ONLINE COURSEThursday, January 15, 20268:00am to 11:30amInstructor: Arnie Linzer Approved for NYSDEC Recertification credits Category: 3a Ornamentals and Turf - 3 credits For certified professional pesticide applicators. The main object...

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Graphic for closure on Dr. Martin Luther King, Jr. Day
Original photo is in the public domain in the National Archives.

Offices Closed - Martin Luther King, Jr. Day

Monday, January 19, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Monday, January 19th for Martin Luther King, Jr. Day.

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winter market 2

Winter Market at Eisenhower Park

Saturday, January 24, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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caution sign re: pesticide use

​30 Hour Pesticide Training Course - February 2026

Wednesday, February 4, 2026

FOR ORNAMENTALS AND TURF CATEGORY 3AOnlineFebruary 4, 11, 18 & 258:00am to 5:00pmPresenter: Arnie Linzer This course is approved by the New York State Department of Environmental Conservation (DEC) and requires anyone supervising or applying pesticides to ornamental and turf to take a 30 Hour Pes...

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canning workshop

​Local Producer Education Series

Wednesday, February 4, 2026

Join CCE Nassau County, Taste NY, and fellow Long Island producers once a month for an evening of learning, networking, and expert insights to help take your business to the next level.Location:Cornell Cooperative Extension Nassau CountyEisenhower Park, Special Activities Building, Parking Field ...

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winter market 2

Winter Market at Eisenhower Park

Saturday, February 7, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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caution sign re: pesticide use

Insecticides 101

Thursday, February 12, 2026

Online Course: INSECTICIDES 101For DEC Pesticide Recertification Category 3a, Ornamentals and Turf, 3 Credits and Category 3b, Turf, 1.5 CreditsFebruary 12, 20268:00am - 11:30amInstructor: Arnie Linzer This will be an online Zoom meeting course. The purpose of this course is to review and strengt...

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Presidents Day clipart

Offices Closed - Presidents Day

Monday, February 16, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Monday, February 16th for Presidents Day.

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winter market 2

Winter Market at Eisenhower Park

Saturday, February 21, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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caution sign re: pesticide use

​30 Hour Pesticide Training Course - March 2026

Wednesday, March 4, 2026

FOR ORNAMENTALS AND TURF CATEGORY 3AOnlineMarch 4, 11, 18 & 258:00am to 5:00pmPresenter: Arnie Linzer This course is approved by the New York State Department of Environmental Conservation (DEC) and requires anyone supervising or applying pesticides to ornamental and turf to take a 30 Hour Pestic...

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canning workshop

​Local Producer Education Series

Wednesday, March 4, 2026

Join CCE Nassau County, Taste NY, and fellow Long Island producers once a month for an evening of learning, networking, and expert insights to help take your business to the next level.Location:Cornell Cooperative Extension Nassau CountyEisenhower Park, Special Activities Building, Parking Field ...

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winter market 2

Winter Market at Eisenhower Park

Saturday, March 7, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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caution sign re: pesticide use

Core 101

Thursday, March 12, 2026

Online Course: Core 101For DEC Pesticide Recertification Core, 4 creditsMarch 12, 20268:00am-12:45pm Instructor: Arnie Linzer This will be an online Zoom meeting course. The purpose of this course is to review and strengthen the important basics for the safe use of pesticides and administrative a...

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winter market 2

Winter Market at Eisenhower Park

Saturday, March 21, 2026

If interested in becoming a vendor, email nassau@cornell.edu

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canning workshop

​Local Producer Education Series

Wednesday, April 8, 2026

Join CCE Nassau County, Taste NY, and fellow Long Island producers once a month for an evening of learning, networking, and expert insights to help take your business to the next level.Location:Cornell Cooperative Extension Nassau CountyEisenhower Park, Special Activities Building, Parking Field ...

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canning workshop

​Local Producer Education Series

Wednesday, May 6, 2026

Join CCE Nassau County, Taste NY, and fellow Long Island producers once a month for an evening of learning, networking, and expert insights to help take your business to the next level.Location:Cornell Cooperative Extension Nassau CountyEisenhower Park, Special Activities Building, Parking Field ...

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closed for Memorial Day holiday

Offices Closed - Memorial Day

Monday, May 25, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Monday, May 25th for Memorial Day.

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independence day 4th of July holiday

Offices Closed - 4th of July

Friday, July 3, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Friday, July 3rd in observance of the 4th of July holiday.

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Labor Day logo

Offices Closed - Labor Day

Monday, September 7, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Monday, September 7th for Labor Day.

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Thanksgiving Graphic

Offices Closed - Thanksgiving

Thursday, November 26, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Thursday, November 26th and Friday, November 27th for the Thanksgiving holiday.

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Thanksgiving Graphic

Offices Closed - Thanksgiving

Friday, November 27, 2026

The offices of Cornell Cooperative Extension of Nassau County and Dorothy P. Flint 4-H Camp are closed on Thursday, November 26th and Friday, November 27th for the Thanksgiving holiday.

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Abel's Christmas Tree

Offices Closed - Christmas Day

Friday, December 25, 2026

The offices of Cornell Cooperative Extension of Nassau County and DPF 4-H Camp will be closed for Christmas Day on Friday, December 25th. Happy Holiday!!!

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