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Characteristics: Tall tree to 80 m spread 7 m
Seeds per packet: 15
Eucalyptus diversicolor is a tall forest tree. It is Western Australia's tallest tree and one of the two tallest hardwood flowering plants in the world.
Karri has smooth deciduous bark which changes colour as it ages and, as it sheds reveals multi coloured patterns in pink through to white. Its leaves are 9-12 cm long, lance-shaped to elliptical, dark green on the upper surface and pale green below.
The flowers are creamy yellow occurring at the leaf axils in summer.
Its timber is used for structural hardwood and for the manufacture of indoor and outdoor furniture. It is also an important tree for honey production.
Native to the high rainfall areas of the south west of Western Australia.
Prefers deep loams in a protected sunny position, drought and frost tender.
Note: The forest giants of the south Western Australia are considered to include six main species.
Corymbia calophylla (Marri) formally known as Eucalyptus calophylla
Eucalypt's germinate readily from seed and are generally considered one of the easiest natives to grow from seed.
Depending on the species Eucalyptus seed comes in various sizes from very fine to several millimetres long. As a rule of thumb seed that is fine should be sown on the surface of a porous mix and not buried. Seed 1 to 2 mm in diameter can be covered very lightly and seed from 2 mm up can be sown to a depth of the seed width.
Although seed can be sown most of the year in Australia seed is generally best sown in spring or autumn in temperate climates, avoid the coldest and hottest months of the year. The optimum germination temperature for germination is around 18-22°C
General note: Seeds of many natives are dormant and require specific conditions or pre-treatment for germination.
Do not be too hasty to discard seed that does not germinate, seeds will often lay dormant until the conditions are similar to their natural requirements for germination to occur. Containers put to one side will often surprise long after they were discarded.