Volunteer Opportunities

Name: GreenThumb’s 46th Annual Harvest Fair
Start: 2026-10-03T12:00:00-04:00
End: 2026-10-03T16:00:00-04:00

List
Month

September 2026
Coastal Cleanup (MPJ Park)

Saturday, September 19th at 10:00 AM - 12:00 PM Coastal Cleanup (MPJ Park)

Marsha P. Johnson State Park 90 Kent Avenue, Brooklyn, New York, United States

Help clean the beach by cleaning up litter along the shoreline! 2026 Dates: Thursday, July […]

Free
Plumb Beach Cleanup

Saturday, September 19th at 10:00 AM - 12:00 PM

Plumb Beach Belt Parkway, Brooklyn

Join NYC H2O for a cleanup at Plumb Beach! Plumb Beach is located to the […]

Free
Monarch Watch (Marine Park)

Sunday, September 20th at 10:00 AM - 11:00 AM Bat Walk at the Ridgewood Reservoir

Salt Marsh Nature Center East 33rd Street and Avenue U, Brooklyn

Help band butterflies to track the slow decline of the critical monarch species (all the […]

Free
Weeding Wednesdays at Bushwick Inlet Park

Wednesday, September 23rd at 6:00 PM - 7:30 PM Weeding Wednesdays at Bushwick Inlet Park

Bushwick Inlet Park Kent Avenue & N 9th Street, Brooklyn, NY, United States

Join us every week on Wednesday from 6pm to sunset as we weed, mulch, tend plants […]

Free
Green Team (Brooklyn Bridge Park)

Saturday, September 26th at 10:00 AM - 12:00 PM Green Team (Brooklyn Bridge Park)

Brooklyn Bridge Park Pebble Beach, Brooklyn

Green Team takes place twice a month. Green Team volunteers support essential horticultural care in […]

Free
Canarsie Beach Cleanup

Saturday, September 26th at 12:00 PM - 2:00 PM Canarsie Beach Cleanup

Canarsie Pier, Canarsie Veterans Circle Canarsie Veterans Circle, Brooklyn, NY

Join NYC H2O and NOAA at the Canarsie Beach Cleanup! Please join us along with […]

Free
Greencycle Back-to-School Swap

Saturday, September 26th at 12:00 PM - 3:00 PM

MS 126 424 Leonard Street, Brooklyn, NY, United States

Have lots of CLOTHES, SHOES, BEDDING, BOOKS and TOYS taking up space? Bring everything over […]

Free
Sunday Gardening at Transmitter Park

Sunday, September 27th at 10:00 AM - 12:00 PM Sunday Gardening at Transmitter Park

WNYC Transmitter Park 10 Greenpoint Avenue, Brooklyn, NY, United States

Join us on select Sunday mornings as we roll our sleeves and care for WNYC […]

Free
Autumn Wildflower ID Walk (Bushwick Inlet Park)

Sunday, September 27th at 1:00 PM - 2:00 PM

Bushwick Inlet Park Kent Avenue & N 9th Street, Brooklyn, NY, United States

Join the Urban Park Rangers on a walk through Bushwick Inlet Park in search of […]

Free
Weeding Wednesdays at Bushwick Inlet Park

Wednesday, September 30th at 6:00 PM - 7:30 PM Weeding Wednesdays at Bushwick Inlet Park

Bushwick Inlet Park Kent Avenue & N 9th Street, Brooklyn, NY, United States

Join us every week on Wednesday from 6pm to sunset as we weed, mulch, tend plants […]

Free
October 2026
Green Team (Brooklyn Bridge Park)

Saturday, October 3rd at 10:00 AM - 12:00 PM Green Team (Brooklyn Bridge Park)

Brooklyn Bridge Park Pebble Beach, Brooklyn

Green Team takes place twice a month. Green Team volunteers support essential horticultural care in […]

Free
GreenThumb’s 46th Annual Harvest Fair

Saturday, October 3rd at 12:00 PM - 4:00 PM

Join NYC Parks GreenThumb and GreenThumb community gardeners in celebrating the start of fall with […]

September 2026

October 2026