50 Seeds Zinnia Cactus Double Mix Annual Flower These vivid colors are outstanding! Extra large 4 inch quiled petals. Makes this unique zinnia a must have! They are well-filled flowers on long, strong stems. Each flower will last for 4 weeks or more. They have a long vase life perfect for bouquets. Prefers full sun or partial shade. Moderate water. Will grow to a height of 40-50 inches and does not require support. These are annuals but the seeds are good-sized and super easy to collect so you can grow these beauties year after year. Will do well in all zones.