is it cultivable?
Yes, but "B. epica" is fairly new to cultivation
Banksia epica
"B. epica" is fairly new to cultivation
what is banksia epica? A shrub where can you find it? South coast of Western Australia who discovered it? Edward John Eyr
wiki:22221187
Banksia epica [SEP] Cultivation
Propagation is by seed or cuttings. Seeds do not require any treatment, and take 14 to 49 days to germinate. In the absence of further information specific to "B. epica", George recommends that cultivated plants be treated as for "B. media" and "B. praemorsa", both of which require a sunny position in well-drained soil, and tolerate only light pruning not below the green foliage.