Prairies and savannas in the Minneapolis park system are typically scheduled for burning once every two to three years.
Without fire, shrubs would invade grassland plant communities and ultimately turn into woodlands over time.
The MPRB and its contractors carefully manage prescribed burns to ensure safety:
Prescribed burns are a preferred method of vegetation management in native prairie areas and can be used as a management tool for other vegetation types as well. However, weather, air quality alerts, staff and equipment availability, permits from multiple agencies, traffic control needs are all determining factors in implementing a prescribed burn in an urban area. These limitations frequently prevent prescribed burns from being used consistently.