The best time to install Savana Santa Ana grass is when the ground temperature is warm which assists the turf to establish a root system quickly. So here in Perth, WA during Spring, Summer or Autumn is best, although it will establish over Winter if you want to make use of the free rainfall, if you don't mind waiting a little longer for the turf to establish. Having good soil that retains water is key to the performance of any lawn, which you can do by incorporating compost, manures, clay, blood and bone, soil wetters. A good reticulation system where the water sprays cross each other so no areas miss out on water is also very important!