Acacia decurrens (Green wattle). Sunset: 8-9,14-24 USDA: 9-11. Young trees are frost tender. Full sun. Evergreen tree, fast growing to 30 – 50′ tall. Low water, needs good drainage. Origin: Australia (New South Wales, Victoria and Tasmania). Propagation: Seeds (better results with hot water treatment). 32,000 seeds per lb.