Green Cambridge offers volunteering opportunities that advance our mission and provide groups with team-building activities and learning experiences that connect to the local environment. We offer these to corporations, schools, and local businesses using a sliding-scale donation structure.

We ask our volunteer groups to support our work by donating to Green Cambridge, a 501(c)(3). Donating helps ensure your event’s success, covers materials and supplies, and supports the organization's youth-focused programmatic work. Your contribution is vital to Green Cambridge's work, and your group is celebrated on our website, in our newsletter, and through social media channels. 

We request donations on a sliding scale appropriate to your organization's scale and size. Schools and local businesses that are members of Cambridge Local First are offered discounts on donation levels.

Volunteer events are scheduled throughout the year, and can be scheduled for Friday mornings between 9:30 a.m. – 1 p.m. on the dates listed below. We ask that groups provide staff to manage their participants during the event.

Email us at info@greencambridge.org to reserve a day for your group. 

We encourage interested groups to schedule their events as soon as possible, as dates fill up quickly. If your organization would like an alternative date or time, we may be able to accommodate given enough time to prepare.

Available Dates for Group Volunteering 2025

March 14, 21, 28
April 4, 11, 18, 25
May 2, 9, 16, 30
June 6, 13, 20, 27
July 11, 18, 25
August 1, 8, 15, 22, 29
September 12, 19, 26
October 3, 10, 17, 24
November 7, 14, 21

Corporate Volunteer Event Sponsorship

For corporations, below are our base levels of support, and we ask that your donation level be in line with the scale of your organization.

$1,750 Events with up to 15 volunteers
$2,000 Events with 16-25 volunteers 
$2,500 Events with 26-40 volunteers 
$3,500 Events with 41-60 volunteers 
$5,000 Events with 61-80 volunteers

Local Business Volunteer Event Sponsorship

For groups coming from Cambridge Local First members, we offer a 50% reduction in base donation levels.

$875 Events with up to 15 volunteers
$1,000 Events with 16-25 volunteers 
$1,250 Events with 26-40 volunteers 
$1,750 Events with 41-60 volunteers 
$2,500 Events with 61-80 volunteers

Educational Volunteer Event Sponsorship

For school, university, and college volunteer groups, who are working toward shared goals of inspiring future environmental leaders, we offer an 80% reduction in base donation levels.

Class trips from public schools may qualify for lower amounts, though we do request a donation of any size from these groups to help offset our costs.

$350 Events with up to 15 volunteers, including faculty and staff
$400 Events with 16-25 volunteers, including faculty and staff 
$500 Events with 26-40 volunteers, including faculty and staff 
$700 Events with 41-60 volunteers, including faculty and staff 
$1,000 Events with 61-80 volunteers, including faculty and staff

Donation Terms
Groups working with us agree to donate the full pledged amount that fulfills the requested non-refundable donation structure listed above no later than three weeks before the event. Payment shall be made by check, electronic transfer, or credit card to Green Cambridge. Our mailing address for checks is 99 Bishop Allen Drive, Cambridge, MA 02139. Electronic transfers may be sent to Eastern Bank. Credit card payments may be made at greencambridge.org/donate. If using a credit card, we ask that the sponsor cover the processing fees.