Love potted flowers in the spring
White impatiens border This has to be tops on the list of my favorite borders
White forget-me-nots, tulips, daisies and money plant combine with hostas and silvery astelia foliage in this spring garden
Edelweiss lavender...could do this across the front of the house in front of the little hedge...
The White Garden at Sissinghurst is the mecca of all white gardens, so that probably goes on the list too.
PLANTING PLAN: A White Garden Shines Day and Night - Fine Gardening Article
Plant your own Moonlight Garden - This selection of spectacular, bright white blooms gleams among shimmering silver foliage in a rich tapestry of contrasting textures.
I like the structure, maybe leave open and put fabric panels up in the summer. (front patio garden). More
Re-creating a bit of Sissinghurst Castle's "white garden" in my backyard. Get a list of plants, bit of history and details of the plan
white cosmos, petunias, datura, cleome: it's possible to have a full, lush garden with annuals from seed