Salvia urica has been a steadily flowering shrub in my shade garden. The Blue Bush Sage is native to Guatamala. Ours have grown to 3 feet, but references suggest that they can get bigger. Ours have not been damaged by temperatures that dip into the mid 20°s F. Salvia urica produces dark blue flowers Spring through Fall. Salvia urica is a great addition to the hummingbird garden as well as the butterfly garden.