Taiga Tea
Camellia exotica
This plant superficially resembles Camellia sinensis (the common tea plant), but it only grows in the Ural montane tundra/taiga region. The plant itself has leaves that are significantly more purple on the underside, and the plant does not increase in size past a certain point. Camellia exotica plants are also considerably hardier than ‘regular’ tea plants, and can survive in much more hostile conditions. It is not exactly an invasive species, but it grows well and fairly quickly.