 Banksia violacea is rarely cultivated . It is a slow @-@ growing plant that tends to become untidy with age , and generally does not flower until four to five years after sprouting from seed . Flowers are an unusual colour , but occur within the bush where they grow within and are usually obscured by foliage . It tolerates light pruning not below the green foliage , except for the variant with a lignotuber , which may be pruned heavily . George recommends a sunny position in light , sandy soil . Professor Margaret Bernard Sedgley of the Waite Institute suggests the species is of no value to floriculture , as the inflorescences are too small and obscured by the foliage , although she does add that the purple colour may be a worthwhile character to select for in plant breeding . Seeds do not require any treatment , and take 19 to 50 days to germinate . 
 Banksia violacea is rarely cultivated . It <a href='drop_aux' title='1'><mark>is</mark></a>a slow @-@ growing plant <a href='null_relcl' title='2'><mark>that</mark></a><a href='uninflect' title='3'><mark>tends</mark></a> to become untidy with age , and generally <a href='uninflect' title='4'><mark>does</mark></a> not flower until four to five years after sprouting from seed . Flowers <a href='drop_aux' title='5'><mark>are</mark></a>an unusual colour , but occur within the bush where they grow within and are usually obscured by foliage . It <a href='uninflect' title='6'><mark>tolerates</mark></a> light pruning not below the green foliage , except for the variant with a lignotuber , which may be pruned heavily . George <a href='uninflect' title='7'><mark>recommends</mark></a> a sunny position in light , sandy soil . Professor Margaret Bernard Sedgley of the Waite Institute <a href='uninflect' title='8'><mark>suggests</mark></a> the species is of no value to floriculture , as the inflorescences <a href='drop_aux' title='9'><mark>are</mark></a>too small and obscured by the foliage , although she <a href='uninflect' title='10'><mark>does</mark></a> add that the purple colour may be a worthwhile character to select for in plant breeding . Seeds do not require <a href='None' title='11'><mark>any</mark></a><a href='negative_concord' title='12'><mark>treatment</mark></a> , and take 19 to 50 days to germinate . 
Banksia violacea is rarely cultivated . It a slow @-@ growin plant tend to become untidy with age , and generally do not flower untill four to five years after sprouting from seed . Flowers an unusual colour , but occur within da bush where they grow within and r usually obscured by foliage . It tolerate light pruning not below the green foliage , except fir tdavariant with a lignotuber , which may be pruned heavily . George recommend a sunny position in light , sandy soil . Professor Margaret Bernard Sedgley of the Waite Institute suggest the species is of no value to floriculture , as the inflorescences too small and obscured by the foliage , although she do add that thdaurple colour may b a worthwhile character to select for in plant breeding . Seeds do not require no treatment , and take 19 to 50 dayz to germinate .