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Characteristics: Tree to 45 m spread 7 m
Seeds per packet: Approx 12
One of the Giants of the forest from the south-west of Western Australia.
The fibrous bark is red-grey in colour with the leaves having distinctively thickened margins. The timber is world famous, being renowned for its toughness and durability and is used for scantling, construction, flooring, furniture and railway sleepers which were also used in the London underground.
Trees can live for 500 years and attain a height of 45 m with a trunk diameter of 3 to 4 metres. Creamy white flowers occur mainly in spring and summer.
Prefers a light to medium well-drained soil in a protected sunny position, drought and frost resistant.
Note: The forest giants of the south of 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.