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Characteristics: Rounded shrub 60 cm to 1.8 m
Seed per packet: 5
Variable in height depending on the conditions if ranges from 60 cm to 1.8 metres tall. Interesting usually coloured blue-purple flowers occur between May and September.
Responds well to pruning, prune when flowering has finished.
Hakea lehmanniana grows naturally in sand and gravely soils in areas of south-western Western Australia over a dissolution area of the Avon Wheatbelt, Esperance Plains and Jarrah Forests.
Adaptable to a range of soils provide it is well drained. Prefers an open sunny position and is drought tolerant and frost resistant to -5°C
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.
Pre-germination of seed by sowing into a closed container containing moist vermiculite or a similar material is also a useful method of germinating seeds, particularly for winter sowing when outdoor temperatures may be unsuitable. Germination usually occurs in 1-2 weeks using this method and when the root has reached about a centimetre or so in length, the seedling can be placed into a small pot of seed raising mix. (Source Australian Native Plants Society)
Pre-treatment of smoke: Not considered critical for this Hakea but may be beneficial.
Many members of the Proteaceae are responsive to pre-treatment of smoke. Although germination will often occur without smoke treatment it has proved to be beneficial in reducing the number of days to germination and increasing germination rates in many species.
Smoke treatments are simple and can be undertaken either by soaking the seed overnight or by applying to the surface after sowing, both provide good results. Smoke treatments available by clicking here.
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.