Orchid Hush is a gorgeous lavender based grey colour featured by Pantone for Fall 2011.  Here are some flowers that may be close to that hue.

Orchid Hush
Pantone 13-3805

Orchid Hush Coloured Flower:  Silverstone Rose

Orchid Hush Coloured Flower:   Pale Lavender Iris

Orchid Hush Coloured Flower:  Mixing Pale Pinks and whites with light purples and blues and using eucalyptus for foliages.

Orchid Hush Coloured Flower:  Pairing of Silver Brunia and Lavender Freesia with the Cool Water Rose

Orchid Hush Coloured Flower:  The pairing of Silver Brunia and Thistle

Orchid Hush Coloured Ribbon

Orchid Hush Coloured Flower:  White and Lavender Sweet Peas

Orchid Hush Coloured Flower:  Pairing silver dusty miller with pale purple phaleonopsis orchids balances to the orchid hush colour agains the other shades of pink.

Orchid Hush Coloured Flower:  The hue is obtained by mixing dusty miller, and light purple and light blue delphinium to give that orchid hush tone overall.  It works with the bright and dark purple freesia.

Orchid Hush table cloth with flowers and napkins in the same colour family.

Orchid Hush for dresses…. and use a bolder coloured flower against the smooth silvery lavender grey