St Charles County Master Gardeners
Click on address for map.
636-875-7457
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The Extension Center Demonstrations Gardens
Bring your camera. Mornings and evenings are great times to stroll. The gardens are open to the public every day during the daylight hours. The Master Gardeners also provide scheduled guided tours available in May and early June. See the link to the right for more information about tours. Click here for an aerial drone view map.
Supporting the Monarch Butterfly
The National Garden Bureau has designated 2025 as The Year of the Asclepias (milkweed) and encourages gardeners to plant this attractive and useful flowering perennial which is vital to the survival of the monarch butterfly.
Public Classes to be offered in September
There will be two public In The Garden classes held September 13th 2025, 9-noon on Flower bulb and Garlic bulb planting, and Fall Lawn Care at the University of Missouri Extension Center, 260 Brown Road, St Peters MO
The cost is $20 for both classes. Watch this site for registration instructions.
Farmers Market
The St Charles County Master Gardeners have a table at the at the St Charles Market on Main Street, between Clark and Monroe, on the first Saturday of the month, May through September, from 7:30-noon.
Stop by and visit us!
Introducing the 2025 Core Training Class
St Charles County welcomes the newest Master Gardener classroom graduates. After finishing their hands-on volunteer activities they will complete their training.
To learn more about becoming a Missouri Master Gardener, visit
https://extension.missouri.edu/programs/extension-master-gardener/training