Whether it is the edible cooking spice called Sage, the colourful annuals, or the Perennial garden plants that you know, they are all Sage, or Salvias as they are known by Horticulturists. There are about 1000 different species of Salvia. They grow in sunny spots or also in semi-shaded position, and are fast growing. The Salvia in the photo is Salvia leucantha or Mexican Sage. These are a perennial plant, flowering most of the warmer months, and benefit from a good hard pruning in Winter when the plant is dormant. This plant is in a garden near the Sydney Harbourside.