These plants are great for adding color in the garden (or home), especially in dark, drab-looking corners. They can be grown from seeds, cuttings, transplants or potted plants. They need fertile, well-draining soil and usually perform best in areas with partial shade, though many varieties can also tolerate sun. Their colors are much more vibrant if they receive at least 6 hours of sunlight daily.
New plants, especially, need to be kept moist. Sprinkle the seeds onto the soil or a potting medium and push them down gently. Do not cover the seeds because they require light to germinate. They can grow rapidly.