This is a odd plant as it's one of the only variegated Ginger Lilies. The variegation takes the form of a fine stripy flecking on all the foliage that is distinguishable from a disease or deformity in that it's stable and does not seem to impair the vigourous growth of the plant. The flowers bourne in later summer are pale cream with a hint of apricot and structurally similar to more familiar Hedychiums like coccinea or gardnerianum.
It would be worth asking me for it in the off-season from Nov-Apr as you're more likely to get a bargain compared to what I'll be asking at a plant fair.
Hedychium 'Dr Moy'