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Banksia integrifolia
Also called Coastal banksia, White Honeysuckle, Honeysuckle Oak, White Banksia, White Bottlebrush
Coast banksia is a variable Australian tree native to the east coast, most often seen as a single gnarled trunk up to about 25 m. It is a hardy, low-maintenance garden tree that tolerates wind, salt and many soil types, but it is too large for small gardens.
Banksia integrifolia, commonly known as the coast banksia, is a species of tree that grows along the east coast of Australia. One of the most widely distributed Banksia species, it occurs between Victoria and Central Queensland in a broad range of habitats, from coastal dunes to mountains. It is highly variable in form, but is most often encountered as a tree up to 25 metres (82 ft) in height. Its leaves have dark green upper surfaces and white undersides, a contrast that can be striking on windy days.
It is one of the four original Banksia species collected by Sir Joseph Banks in 1770, and one of four species published in 1782 as part of Carolus Linnaeus the Younger's original description of the genus. It has had a complicated taxonomic history, with numerous species and varieties ascribed to it, only to be rejected or promoted to separate species.
Hardy and versatile, B. integrifolia will grow in clay, sand, acid and even alkaline soils, and it shows good resistance to wind and salt, making it suitable for seaside planting. It is therefore highly regarded as a low-maintenance garden tree, although its large size makes it unsuitable for smaller gardens. Its hardiness may, however, forewarn weed potential, as some evidence of weediness has been seen in South Africa, Western Australia and New Zealand. When growing near bushland within its native habitat, it is suggested to obtain local provenance plants if available.
The most common form available in commercial nurseries is unimproved Banksia integrifolia subsp. integrifolia. It prefers a sunny aspect without exposure to frosts, and tolerates fairly heavy pruning. Seeds do not require any treatment, and take 5 to 6 weeks to germinate. Flowering begins at around four to six years from seed. The other subspecies are less well known in cultivation, but are obtainable. Cultivation is presumably similar to B. integrifolia subsp. integrifolia, except that B. integrifolia subsp.
B. integrifolia is widely distributed, in both geographical and ecological terms. According to Alex George, "it spans a wider geographical and climatic range than any other species." Thiele and Ladiges make a similar claim: that its distribution "is a broader latitudinal, altitudinal and ecological amplitude than any other species, with the possible exception of B. spinulosa." No other species of tree occurs closer to the coast at Cape Byron, making B. integrifolia the most easterly tree on the Australian mainland.
Heath-leaf banksia · Banksia littoralis · Silver banksia · Menzie's Banksia · Banksia petiolaris · Acorn Banksia · Creeping Banksia · Broadleaf Banksia · Banksia seminuda · Banksia serrata · Parrot Bush · Banksia spinulosa var. collina
Text excerpted from the Wikipedia article Banksia integrifolia by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
