The couple's most colorful bouquets feature bright Benary Giant zinnias. Perhaps the most spectacular of all zinnias, Benary Giants grow to 36 inches tall or more and come in many vivid colors with nicely rounded, closely petaled blossoms. They like full sun but will bloom beautifully with as little as 4 hours of direct sun per day. They usually require staking in the garden. A bonus: They make exceptionally beautiful cut flowers.