RAOULIA australis Mat forming evergreen with silvery foliage. £2.40 out of stock 0 in your basket View Basket Checkout Silvery evergreen. Mat forming Tiny silvery leaves forming a very low evergreen mat. Tiny pale yellow flowers appear from July-August. Raoulia prefers a sunny sheltered position in a moist but free draining soil that contains plenty of organic matter such as leafmold or well rotted compost. Ideal in a scree but requires protection in the wet and cold winters. Alpine house culture may be preferred. New Zealand along gravelly river banks.