Volunteers Clear Invasive Buckthorn in Green Bay

Local volunteers removed invasive buckthorn from John Muir Park to support the growth of native trees and shrubs.

Updated on Oct. 24, 2026 in Botany

Charcoal-like biochar granules sit on a forest floor next to a severed, thorny buckthorn branch under filtered woodland sunlight. — Volunteers in Green Bay are clearing invasive buckthorn from John Muir Park, converting the removed biomass into biochar to boost local soil nutrient retention. AI Illustration. Upload story photo >

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Do you believe local volunteer efforts are sufficient to manage invasive species in your community parks?

Volunteers gathered at John Muir Park to clear invasive buckthorn, an aggressive species that prevents native plant germination. The removed wood is being processed into biochar to provide water and nutrient retention for local vegetation.

Why it matters

Buckthorn poses a persistent threat to native biodiversity in regional parks by crowding out indigenous flora. By converting this invasive biomass into soil-enhancing biochar, the community can actively restore local ecosystem health.

The Green Bay Conservation Corps has successfully cleared 300 acres of invasive buckthorn across the city. This year, the resulting biochar supported the successful planting of more than 100 new trees.

The players

Green Bay Conservation Corps

This local organization leads environmental management efforts, including the removal of invasive species and the restoration of public parks.

The details

Volunteers cut down and burn the invasive buckthorn to produce charcoal-based biochar. This material acts as a sponge in the soil, effectively retaining essential water and nutrients for native plant growth.

October 24, 2026: Volunteers cleared buckthorn at John Muir Park.
2026: More than 100 trees were planted using biochar.

The Big Picture

This project follows the pattern set by Make a Difference Day, an annual event that leverages collective volunteerism to address local environmental and social challenges. The effort demonstrates a shift toward circular conservation practices where invasive biomass is repurposed into useful soil amendments.

The use of biochar in local soil can significantly improve the survival rates of newly planted trees in city parks by increasing water retention. Residents can expect healthier, more resilient green spaces as the city continues to integrate these soil management techniques.

The takeaway

Repurposing invasive species into biochar transforms a management burden into a tool for environmental restoration. Community members can support these efforts by participating in future clearance events at local parks.