Posted: 29/08/2014 at 10:42
Just bear in mind, too much shade and you lose the variegation.
However, miscanthus variegatus is a delightful grass that has bright white and green variegation and will light up a darkish spot from May until autumn Still on the grass theme arrhenatherum bulbosum is very white and bright during winter and spring. Only a couple of feet high but a star at this time.
White Arum lilies......love shade and brighten any dark area in spring.
Heuchera snowstorm ...white grey foliage......yellow Heucheras, etc all worth considering