Washingtonia robusta (southern washingtonia) is a member of the Arecaceae family. This evergreen shrub exhibits a columnar upright growth habit and is characterized by its evergreen foliage. It has a hardiness rating of heated glasshouse – warm temperate (5 to 10ºc), and is can be grown outdoors in summer throughout most of the uk while daytime temperatures are high enough to promote growth. .
When fully mature, Washingtonia robusta can reach an ultimate height of Higher than 12 metres and a spread of 2.5–4 metres. For optimal growth, it prefers west–facing, south–facing aspect and sheltered exposure. It thrives best in loam soil types and should be placed in a full sun position.
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