The Arboretum sponsors several major special events. Each event requires extensive planning, complicated logistics, and lots of volunteer help. Many Arboretum Members who are unable to volunteer on a regular schedule, participate in special events. The Annual Plant Sale is a three day tree and plant sale. An average of 10,000 people visit the Arboretum on Plant Sale weekend.
Volunteers serve as cashiers, plant experts, sales assistants, gophers and in many other ways.
On Holden Pond is a summer dinner dance benefit raising funds for the Arboretum. Volunteers are asked to help with decorations, invitations, raffles, auction donations, art work and committees. The Pancake Breakfast is a early spring event for Holden members. Volunteers and their families are needed to help with the breakfast. Activities such as pancake flipping, serving, kitchen help, and clean up all contribute to the volunteer spirit.