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Robinia pseudoacacia

Biological Category 
Species Type 
LHPrism Status 
Tier 4 - Widespread

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Impacts of this species 

 Vegetative regeneration is vital in this plant's establishment, spread and persistence in non-native locations, giving it the ability to replace native vegetation. Developing black locust thickets can prevent other plants from establishing and may disrupt historical successional trajectories. In mixed-hardwood forests, these trees have been seen to contribute to elevated stream nitrate concentrations.  Because of its nitrogen fixing abilities, black locust may also alter local soil characteristics, in turn disrupting biological activity in soil and preventing certain native plants from growing. Black locust canopies may block sunlight from reaching seedlings of other plants, such as native oaks, ultimately lowering species diversity. Seeds may remain viable in soil for more than 10 years, and are oportunistic in growth, giving them the ability to thrive through non-ideal conditions.