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BANKSIA plagiocarpa
Hinchinbrook Banksia or Blue Banksia
RARE. Limited Stock
Stock: Out Of Stock
SKU Code: N 538
Family: Proteaceae
Characteristics: Shurb to 5 metre
Seeds per packet: 5
A rare species of Banksia with stunningly attractive blue-grey flowers buds 78-14 cm tall and 5-6 cm in diameter. Flowering occurs from February to July.
Typically grows as a shrub to 5 m (16 ft) in height with greyish bark and long narrow lanceolate leaves 8-20 cm long arranged alternatively along the stems. Attractive new red growth is covered in soft red hairs almost velvet-like.
An adaptable species for tropical to temperate climates make it an ideal species for Eastern Australia as it is tolerant to humid summers. Frost tender.
Occurs naturally in a limited area on Hinchinbrook Island, Queensland and the immediately adjacent mainland.
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
- The growing medium should be well draining but should remain damp between watering.
- Sow the seed the depth on the seed size. Vermiculite is a good medium to use to cover the surface as it helps retain moisture and controls the temperature.
- Keep moist but not too wet as the seed may rot. Do not let the growing mix completely dry out.
- Germination should occur in 21-60 days depending on the temperature and conditions.
Pre-treatment of smoke: Not considered critical to germination of this species and germination will generally occur without it.
However many members of the Proteaceae family 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 of the Proteaceae family.
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.
Australian Plant Society - Banksia plagiocarpa
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