General Impact
Can create a dense groundcover that prevents native plants from germinating on the forest floor. (Floridata.com)
Location Specific Impacts:Cayman Brac (Cayman Islands) 
Reduction in native biodiversity: Tradescantia spathacea forms dense ground cover inhibiting native herbaceous flora (Burton, 2003 in Varnham, 2006). Grand Cayman (Cayman Islands)
Reduction in native biodiversity: Tradescantia spathacea forms dense ground cover inhibiting native herbaceous flora (Burton, 2003 in Varnham, 2006). Little Cayman (Cayman Islands)
Reduction in native biodiversity: Tradescantia spathacea forms dense ground cover inhibiting native herbaceous flora (Burton, 2003 in Varnham, 2006). Yucatan (Mexico)
Physical disturbance: Creates a dense groundcover that prevents native plants from germinating on the forest floor. Florida (USA) (United States (USA))
Competition: In some situations it is known to have invaded hardwood hammock forests. In such places, it can create a dense groundcover that prevents native plants from germinating on the forest floor.
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