Milwaukee County has no ordinance dictating plant choice on private yards, but it strongly protects native plants and native fungi within its 157-park system. Milwaukee County Ordinance sec. 47.08 bars harvesting, injuring, or removing park vegetation, and only DPRC-authorized staff may remove invasive species.
For a private yard, Milwaukee County does not require or prohibit native versus non-native landscaping; that choice is unregulated at the county level, subject only to municipal and HOA rules and the statewide noxious-weed duty in Wis. Stat. 66.0407. Where the county acts is on its own parkland. Milwaukee County Ordinance 47.08 protects native plants and native fungi in the park system, making it unlawful to break, cut, remove, or injure park vegetation, and foraging is not permitted. Invasive-species removal in county parks may be done only by DPRC (Department of Parks, Recreation and Culture) staff or those with written permission. Residents choosing native plantings should confirm their municipal weed ordinance treats them as intended landscaping.
There is no county penalty for planting or not planting natives in a private yard. Harvesting, removing, or injuring native plants or fungi in a county park, or planting there without written DPRC permission, violates Milwaukee County Ordinance 47.08.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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