In the Western Cape the best time to plant is WINTER!!!! You must follow your natural rainfall pattern, as planting with it allows you plants to adust to the seasons and develop in the cooler conditions, so that they are established with their roots deep in the ground by the time the heat and wind of summer arrives. This will vastly improve you success rate especially with protea and other fynbos species. Stick to the cooler months when planning your gardening. It also means you dont have to worry about watering.