Hibiscus is usually the first plant that comes to mind when someone wants to attract sunbirds, and it earns that reputation easily. Its large, trumpet-shaped blooms hold a generous supply of nectar that these birds find difficult to resist, and the plant flowers freely once the weather turns warm. Available in shades of red, pink, yellow, orange, and white, hibiscus adapts well to container growing, making it a natural fit for balconies. Give it five to six hours of direct sunlight each day, prune it regularly, and it will keep producing fresh blooms that double up as a steady feeding spot.