|Banksia grandis subsp. var.||Mangite, Bull Banksia, Giant Banksia|
Bull Banksia usually grows as a tree between 5 and 10 metres high, but may attain heights of up to 15 metres. It is also found in the form of a stunted, spreading shrub, near the south coast and whenever it occurs among granite rocks. Its trunks are short, stout and often crooked, with the rough grey bark characteristic of Banksia. The leaves are very distinctive; they are very large, being up to 45 cm long and 11 centimetres wide, and consist of a series of triangular lobes that go right back to the prominent midrib. Shiny dark green on top, they have a soft white tomentum underneath. New growth is a paler lime green and very attractive. Flowering is in Summer. The large cylindrical flower spikes, which can reach up to 35 cm high, are yellow, with a cream style. The "cones" shed their old flower parts early, so do not have the hairy appearance of the "cones" of many other Banksia species. Old cones are often varnished or cut and the typical banksia species used in decorative woodwork.
Bull Banksia is very sensitive to dieback and is difficult to grow in regions of summer humidity. It requires a well drained sandy soil. Seeds do not require any treatment, and take 22 to 42 days to germinate.
Heat cone in hot oven (to emulate a fire) and then extract seed to plant.
Pests and diseases
- ↑ Sweedman, Luke; et al. (2006). Australian seeds: a guide to their collection, identification and biology. CSIRO Publishing. p. 203. ISBN 0643092986.