 Due to its ready propagation from stem fragments and its domination of the ground layer in many forest environments, T. fluminensis has become a major environmental weed in Australia, New Zealand and the southern United States.. Other species considered invasive weeds in certain places include T. pallida, T. spathacea, and T. zebrina.Some members of the genus "Tradescantia" may cause allergic reactions in pets (especially cats and dogs) characterised by red, itchy skin.Notable culprits include "T. albiflora" (Scurvy Weed), "T. spathacea" (Moses In The Cradle), and "T. pallida" (Purple Heart).