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Colleen Dempster


M.Sc., B.Sc.

Certified Arborist #ON-2726A

Soil Food Web Certified Laboratory Technician

Colleen's passion is in restoring the environment. With a Masters of Science that involved looking at algae under the microscope, Colleen quickly adapted to using the microscope to analyze soil microbes. She has been making compost, compost tea, and analyzing samples since 2018. She is a graduate of Dr. Elaine Ingham's Soil Food Web School Foundation Courses and a certified Soil Food Web Laboratory Technician.

Let's Chat

For microbial reports and consulting

Colleen at


For compost tea application inquiries

Shady Lane Expert Tree Care at


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