Eucalyptus caesia aka Silver Princess

Eucalyptus caesia, or gungurru, is an evergreen tree from Western Australia. Its native range covers the state's south-central and southwest regions. It belongs to the myrtle family, Myrtaceae. Wild plants grow on granite outcrops, including sites with little rain. They occur in sand, sandy loam, and some clay soils.

Garden trees reach about 26–39 feet [8–12 metres] tall. Their spread reaches about 8–13 feet [2.5–4 metres]. Several trunks may grow from one woody base, called a lignotuber. The crown has an uneven outline. Reddish-brown bark peels in curls and shows green bark beneath. Slender red stems carry a white wax coating. Young leaves are glossy green and shaped like hearts. They reach about 0.26 feet [0.08 metres] long. Adult leaves turn grey-green and take a narrow, lance-shaped form. These reach about 0.46 feet [0.14 metres] long. The leathery leaves may curve and end in long points.

Pink flowers hang in clusters during late winter. Virginia Tech describes flowers ranging from pink to bright red. They grow in groups of three, with wide, showy blooms. Each open flower can span about 0.25 feet [0.08 metres]. Buds and fruit share the stems' pale wax coating. Woody fruit follow the flowers and have thick walls. Their shape ranges from urn-like to cup-like or bell-like. Bark, leaves, flowers, and fruit all add interest in gardens. The RHS suggests it for informal gardens and Mediterranean-style planting. Plants For A Future also notes its value for wildlife.

Grow this tree in full sun, sheltered from cold winds. The RHS recommends fertile soil with an acid or neutral pH. Sand or loam suits it, provided water drains well. Moist, well-drained soil is suitable, despite its dry native sites. The RHS lists maturity at five to ten years. Its H2 rating means it tolerates cool air, but not freezing. Plants For A Future lists USDA zones 8–11. These ratings use different systems and give differing impressions of cold tolerance.

Eucalyptus gall wasp and eucalyptus sucker may attack this tree. Possible problems include silver leaf, honey fungus, and oedema. Plants For A Future records a food use for young root bark. People bake it, then grind it for its sweet, malt-like taste. That use does not establish the safety of other parts. The same source lists no known medicinal uses.