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BANKSIA squarrosa syn. Dryandra squarrosa
Pringle
Family: Proteaceae
Characteristics: Shrub 1 to 4 m
Seeds per packet: 5
A small shrub 1-4 metres high with prickly foliage and yellow flowers that occur from June to November in is natural distribution range.
Endemic to the Jarrah forests and the Swan coastal plains in southern Western Australia.
Note: This species used to be known as Dryandra squarrosa until the Dryandra genus was included in the Banksias in 2007.
Adaptable to a range of soils including sandy, gravelly clay or loam. Tolerant of wet winter flats and clay flats. Drought tolerant and moderately frost resistant.
The best time to sow Banksia seeds is autumn or spring. Sow in contains and transplant when they are big enough to handle.
The growing medium should be well draining but should remain damp between watering. Banksia dislikes wet roots, so don't overwater them, or they will rot.
Sow the seed flat around 5mm deep. Vermiculite is an excellent medium to cover the surface as it helps retain moisture and controls the temperature.
Germination should occur in 14-40 days at 20-25°C
Pre-germination of seeds by sowing into a closed container containing moist vermiculite or similar material is also helpful for 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.
Pre-treatment of smoke is not critical to the germination of this species. However, many members of the Proteaceae family are responsive to the pre-treatment of smoke.
Smoke treatments are simple and can be undertaken by soaking the seed overnight or applying it to the surface after sowing; both provide good results. Smoke treatments are available by clicking here.
*Please note:
- Please do not be too hasty to discard seeds that do not germinate; seeds will often lay dormant until the conditions are similar to their natural germination requirements.
- As with all seeds, they must have adequate water to germinate, keep them moist but not too wet.
- These growth notes are provided as guidance only and do not guarantee successful germination.
- The customer should do their due diligence that they are suited to their region.
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Importing to Tasmania Prohibited