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Get Involved, Make a Difference.

Volunteer Now
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Honeysuckle Hacks
Remove invasive bush honeysuckle from our parks!
Register to hack some Honeysuckle!
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Join the Community Stewardship Alliance
The Community Stewardship Alliance (CSA) is a collaborative program led by Open Space STL intended to restore and maintain natural areas.
Find a CSA Event Near You

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Make a commitment to land and water quality and volunteer with us!
Check out all our upcoming opportunities!

Our Community

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Recent Programs

River des Peres Trash Bash
Community Stewardship Alliance at Spanish Lake Park
Community Stewardship Alliance at St. Vincent Park
Operation Clean Stream
Community Stewardship Alliance at Gravois Creek Conservation Area
Community Stewardship Alliance at Creve Coeur @ Mallard Lake

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Recent Opportunities

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Happens On Nov 8, 2025
Honeysuckle Hack at Creve Coeur Soccer Park - 11/8
Community Stewardship Alliance at Creve Coeur @ Mallard Lake
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Happens On Oct 25, 2025
Pollinator Garden Maintenance at Mallard Lake - 10/25
Community Stewardship Alliance at Creve Coeur @ Mallard Lake
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Happens On Oct 4, 2025
Honeysuckle Hack at Mallard Lake - 10/2
Community Stewardship Alliance at Creve Coeur @ Mallard Lake

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