Manna Gum - Eucalyptus viminalisEucalyptus viminalis (Manna Gum) Eucalyptus viminalis is a tall, fast growing Australian native prized for its smooth pale bark, graceful canopy, and exceptional habitat value. It delivers long term shade, movement, and a classic bushland presence in large landscapes. Why Gardeners Love Manna Gum Smooth pale bark Cream to white trunk creates a clean, elegant look year round. Fast growing native Establishes quickly to provide height and canopy cover.