How to Grow and Care for Snapdragons: Starting Seeds, Planting, and Maintenance Tips. This is a guide on how to grow and care for snapdragons. Snapdragons are easy-to-grow plants that produce colorful flowers. There are different varieties of snapdragons that produce flowers in various colors, such as the Rocket, Sonnet, and Liberty series. To start growing snapdragons, you can either plant the seeds indoors six to eight weeks before the last frost, plant them outdoors in late fall, or buy snapdragon seedlings from a nursery. When the seeds germinate and the seedlings grow leaves, they are ready to be transplanted outdoors. Snapdragons need full sun and grow well in most types of neutral soil. They require watering when the soil feels dry and deadheading of the stems to encourage more flowers to bloom. It's also essential to mulch the planting bed when the weather gets warm to keep the root systems cool. You can collect the seeds as the plants mature by harvesting the seed pods. With proper care and maintenance, snapdragons can last longer before they begin to die off in the summer heat.
