Helping others learn to grow
The mission of the University of Missouri Extension Master Gardener program is to provide horticultural information and training to the gardening public based on proven research specific to the local climate, soils, and plants.
Become an Extension Master Gardener
To become an Extension Master Gardener, participants must attend core training (Cost: $200) and provide at least 30 hours of volunteer service back to their community. Visit the Extension Master Gardener website to learn more.
Core training is offered online and in-person. Online training is offered every spring and fall, and in-person training is offered in the fall. The in-person Master Gardener Core Training in St. Louis is coordinated by Eliza Pessereau.
Upcoming training
Online (August 23rd – December 24th)
Online, self-paced course. Learn more and register here. Registration closes August 23rd.
In-person (Fall 2027)
The in-person course will be taught in the fall, beginning fall 2027. If you would like to be notified when registration opens, sign up for the waitlist here.
St. Louis Master Gardeners
St. Louis Master Gardeners has been providing horticultural information and assistance to the public in St. Louis City and County since 1983. Master Gardeners answer gardening questions through the hotline and provide education through the speaker's bureau, demonstration gardens, and other programs.
According to the 2025 annual report, St. Louis Master Gardeners: Had 391 active members and contributed 55,990 service hours (valued at $1,947,892).
STLMG highlights
St. Louis Master Gardener hotline: Call 314-400-7657 or STLMG hotline website
Speakers bureau: COMING SOON
Daily gardening tips: @stlmastergardener on Instagram
For more information about St. Louis Master Gardeners, visit the STLMG website.
Check it out
If you like Extension Master Gardener, here are some other opportunities or programs which may interest you.
The Garden Hour with MU Extension
Third Wednesdays, Noon - 1 p.m.
Register & submit questions
Watch live on the MU IPM YouTube channel
Missouri Master Naturalist
In partnership with the Missouri Department of Conservation, this program enhances understanding and management of natural resources. Volunteers educate the public and participate in ecological stewardship activities.
Missouri Master Pollinator Steward
This program focuses on pollinator conservation, teaching participants about pollination, honey bees, native pollinators, and habitat improvement through hands-on activities.
In-depth horticulture training for Missourians who wish to spread their knowledge of gardening.
St. Louis Master Gardeners, use this online system to report your volunteer hours.
Put your plans, thoughts and results on paper to help ensure successful gardening.