Our Staff

Gail Church, Executive Director, was present for the founding of TREE MUSKETEERS, and left an airline management career to become its CEO. Years of volunteer service to youth and graduate studies in nonprofit organizational management allow her to skillfully mentor youth leaders. Due to a small staff running a large organization, Gail’s Executive Director duties include development and program direction. Under her leadership, the group grew from local tree planting project to an international scope.

Catherine Magruder, Instructor, teaches the Public Speaking series of LEAD courses.  She has been a member of Toastmasters International, District ONE for over 21 years.  She believes the benefits of learning public speaking skills builds self-confidence, improves clarity of thought, develops critiquing skills to name a few, and feels grateful to pass those benefits on.  She is the mother of two sons and one daughter, who is a past Youth Manager.  Catherine believes that youth truly are the future of the world and wants to help them accomplish their visions and goals.

charmingyuCharming Yu, Volunteer Manager, has a Bachelor of Arts in Environmental Studies and Philosophy from Wesleyan University. She has enjoyed working with volunteers for organizations ranging from science and arts programs to college student groups. She is also passionate about plant-based diet education. Charming enjoys reading, hiking, and yoga when not serving the environment.

marjorie bio pic croppedMarjorie Alexander, Outreach Manager, is completing her Master of Science in Environment Studies from Green Mountain College. With a background in media production management and a passion for improving the planet she is excited to redirect her skills toward a cause she truly cares about, environmental sustainability. Marjorie spends her free time volunteering, sailing and designing sustainable architecture. She is also a proud member of American Mensa.

Brandon HeadshotBrandon Sanders, Community Forester, has a background in digital production but recently decided to pursue his passion for nature by studying horticulture and joining the Tree Musketeers team! Brandon’s experience both in nurseries with plants and as a mentor at an outdoor school makes him a perfect fit. When not hard at work Brandon enjoys growing carnivorous plants and exploring nature.

staff page pic croppedCristal Guzman, Tree Care Supervisor, is completing her Bachelors in English Literature with a focus on Environmental and Medieval literature from California State Univ. Long Beach. She has an infectious enthusiasm for California native plants and land conservation and is excited to be the newest staff member at Tree Musketeers. In her free time she likes to travel, read, play games and write.

To empower young people to be environmental leaders