Propagation
Fresh seed should be sown in a well-drained media and the kept moist but not wet. Maintain a temperature of 18º to 21º C. (64º to 75º F) in an unheated glasshouse or open frame. 

Germination occurs within 3-weeks to 3-months depending on the species, then prick out and pot up. Careful not to over water seedlings, as they are prone to damping off and larger plants are difficult to transplant. 

When removing seed from Banksia fruits it may be necessary to place the fruit in an oven for 60 minutes at a temperature of 120° C. to simulating the effect of a bushfire to opening the valves. 
 
Note:
The seeds of the species require no pretreatment and germinate within 22 to 42 days.

Botanic information
Leaf: The glossy dark green narrow obovate leaves have large triangular lobes that are divided to the mid-rib. The apex is truncate and the base is cuneate and the texture is leathery. The upper surface is covered in tomentose becoming glabrous with the age and the underside is covered in fine woolly grey tomentum.

Flower: The pale yellow tubulate flowers have straight pubescent perianth segments that are up to 35 mm (1⅜ in) long and a pistil to 40 mm (1⅝ in) long. They are arranged in a upright cylindrical spike that is up to 400 mm (16in) tall by 90 mm (3½ in) in diameter and appear terminally on short 1-year old branchlets from late spring to early summer.

Note:
Generally Banksia flower spikes are composed of hundreds of small individual tubular flowers (florets) that are densely arranged around a single cylindrical axis.

Fruit: There are many elliptical follicles that are up to 25 mm (1 in) long by 10 mm (⅜ in) high and 12 mm (½ in) wide. The wrinkly valves open when mature releasing the seeds and are  embedded in a large cone like cluster. The obovate seeds are up to 16 mm (⅔ in) long by 9 mm (⅜ in) wide and flattened (not notched) wing is up to 20 mm (¾ in) wide.
Note:
The seeds are released when the follicles are mature and are not reliant on fire

General pruning information
When pruning reduce only the new growth as cutting old wood is likely to cause dieback. Limbs may be removed back to the collar.

Cultivation
Generally, Banksia species prefer a well drained, sandy soil that is tending acidic but many species from Western Australia grow on acidic top soils with alkaline subsoil. When the growing Western Australian species outside their native habitat technique of building a garden bed, of acidic soil above a layer of agricultural lime commonly produces better results particularly in raised garden beds or on slopes. During establishment, keep the soil moist but not wet and do not use fertiliser that contains phosphorus.