RE: Banksia - an iconic Australian Plant.
Banksia nice name, never heard before.
There are 173 Banksia species, and all but one occur naturally only in Australia. Banksias were named after Sir Joseph Banks (1743-1820 ), who, in 1770, was the first European to collect specimens of these plants.
In recent years the genus Dryandra has been incorporated into the genus Banksia
A number of Banksia cultivars have also been developed.
South western Australia contains the greatest diversity of banksias, with 60 species recorded. They are also an important part of the flora of Australia's eastern coast. Few banksias are found in the arid regions of Australia or in the rainforests of the eastern coast.
There are no species which are common to eastern and western Australia except Tropical Banksia, Banksia dentata , which occurs across northern Australia, in Papua New Guinea, Irian Jaya and the Aru Islands.
Banksia Flowers and Fruits
The flower heads are made up of hundreds (sometimes thousands) of tiny individual flowers grouped together in pairs. The colour of the flower heads usually ranges from yellow to red. Many species flower over autumn and winter.
The fruits of banksias (called follicles) are hard and woody and are often grouped together to resemble cones (which they are not true cones are produced only by conifers).
The fruits protect the seeds from foraging animals and from fire. In many species the fruits will not open until they have been burnt or completely dried
Banksias are easily propagated from seed. A common way to release seed is to place the 'cone' in an oven at 120°140° C for about an hour. The follicles then open and the seeds can be removed with tweezers. Two black winged seeds are usually found in each follicle, together with a structure called a separator.
Insects sometimes lay their eggs in the flower buds and the larvae may eat the seed as it develops. A small hole in the woody fruit is usually a sign that this has happened and that the seed will not germinate.
Seeds should be sown in a very freely draining seed-raising mix which should not be allowed to dry out. As Banksia seedlings are prone to fungal attack, it is better to sterilise the seed-raising mix before planting. If this is not practical, very clean ingredients should be used.
Seedlings should be transplanted into small pots as soon as the first true leaves appear. A potting mix made from equal parts of river sand, loam and leaf mould (or peat moss) is generally suitable.
Banksias for the Garden
Banksias usually grow best in well drained soils in a sunny position. Most respond to light pruning, and those which form a woody rootstock (lignotuber) can be heavily pruned. Only low phosphorus fertilisers should be used.
Banksias range from low-growing shrubs to trees up to 25 m tall. Some species, for example Banksia ericifolia and Banksia menziesii , are known for their spectacular flower heads. The flower heads produce large volumes of nectar and attract many birds and small mammals to feed on them. Banksias are excellent plants to encourage native animals to the garden.
Thanks lot's of things learned about this plant.