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Sea Urchin Hakea
SKU Code: N 397
Characteristics: Shrub or Small tree 2 to 9 m
Seed per packet: Approx. 5
Hakea petiolaris has flowers similar to Hakea laurina which is one of the most admired native plants of south-western Australia.
A highly ornamental variety that displays attractive new flower buds as early as December which become fat by autumn before opening t o reveal cream and pink flowers the resemble pincushions in dense clusters profusely in autumn and winter.
Endemic to Western Australia.
Prefers a medium to heavy soil in a protected sunny position, drought and frost resistant.
Although seed can be sown most of the year in many parts of 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.
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