Niphophila Alpine Snow Gum Eucalyptus Tree
One of the most spectacular of the cold hardy eucalypts Niphophila Alpine Snow Gum is a particularly hardy subspecies of Eucalyptus pauciflora. Trees grow rapidly when young and require full sun in well drained soils. Bark becomes an amazing mottled collage of grays, tans and olive green and is one of the most beautiful characteristics of this tree. Young trees may grow a bit horizontally for the first couple months to a year but it is best to not stake them up as this can lead to a weaker trunk later on. Cold hardiness increases with age and gargantuan specimens can be found throughout Portland. Looks good when planted with Ceanothus beneath it!
And check out what Oregon Live has to say about this gorgeous tree!
Latin Name: Eucalyptus pauciflora ssp. niphophila
Site and Soil: Niphophila Alpine Snow Gum likes full sun and well-drained soil. Very drought tolerant once established and will need little to no supplemental watering during the summer season.
Rootstock Description: Self-rooted
Hardiness: Alpine Snow Gum is hardy to approx. 0º F.
Size at Maturity: 30 ft. in height by 15 ft. width
Bloom Time: Winter
Pests & Diseases: Eucalypts are not bothered by pests or diseases.
USDA Zone: 7
For more info on cold hardy eucalypts check out University of Arkansas post on a few different hardy species.