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Get Involved, Make a Difference.

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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

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

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Recent Opportunities

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Happens On Oct 25, 2025
Land-Based Cleanup: Mary Meachum Freedom Crossing | Grade A/B
River des Peres Trash Bash
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Happens On Oct 5, 2025
Honeysuckle Hack and Invasive Removal at Greensfelder Park
Community Stewardship Alliance at Greensfelder Park
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Happens On Oct 25, 2025
Land-Based Cleanup & Storm Drain Marking: Mount Pleasant Park | Grade A
River des Peres Trash Bash

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