If you prefer the "hot" colors instead--red, yellow, orange--then Mexican sunflower (Tithonia), celosia, red salvia and globe amaranth are better choices.
Most flower arrangements benefit from a little filler material. No matter what the color scheme, the blue and lavender blossoms of Victoria salvia, Verbena bonariensis, love-in-a-mist (Nigella), bachelor's buttons and larkspur will graciously mingle.
For foliage effect, try baby's breath, kochia, dusty miller and the lively variegated leaves of snow-on-the-mountain. If you intend to dry the blooms for use in wreaths and craft projects, reserve a corner of the garden for strawflowers, statice and pearly everlastings.
Perennial selections are wide open. What's wrong with buying a market-pack of delphinium seedlings and growing them only for cut flowers? Delphinium spikes are just too precious to snitch from the border, but there'll be no such reservations if they're growing in a cutting garden. Lupines and foxgloves could be treated in similar fashion.
Many "everyday" perennials make excellent cut flowers: peonies, brown-eyed Susans, phlox, veronica, coneflower, globe thistle, yarrow and red-hot-poker are a few.
Shasta daisy is a universal favorite, and plants will often rebloom after the first crop of flowers is harvested. Delicate sprigs of lavender make nice "teacup" arrangements, combined with the feathery foliage of silver artemisia. And who can resist the old-fashioned charm of sweet William? Poke in a few chrysanthemum cuttings to insure autumnal tones.
Bulbs have a lot to offer cut flower gardeners because they don't take up much space. Squeeze a big handful of tall Darwin tulips into a short row right next to a few giant alliums. There's no need to leave plants room to breathe. If space permits, include an extravagant calla lily or two.
By their very nature, cutting gardens are high maintenance plots. Long-stemmed beauties like delphiniums, "Rocket" snapdragons and gladiolus spikes have to be staked. Instead of supporting individual blooms, construct a grid of wire or string to save time. The "mechanics" don't have to be pretty.
Make plans for a succession of bloom. Dig out bulbs as soon as the flowers are harvested. Pull cool season annuals even before they're spent to make way for a main season crop. And be sure to cut frequently, for it encourages the flowers to keep on coming.
(Lindsay Bond Totten, a horticulturist, writes about gardening for Scripps Howard News Service.)