Replanting the seeds or growing basil in indoor containers ensures a fresh supply of basil year-round. You will save money by growing sustainable, quality plants that are acclimated to the environment.
Pinch off the seed heads as they appear and lay them on top of the soil next to the plant. The seeds may grow the following year. For best results, allow the plant to fully seed at the end of the growing season before the first frost. Collect the seeds as they open and place them in a brown paper bag. Allow the seeds to dry in a cool, dry location and replant in containers indoors.
Basil is often difficult to start from seed and is best grown indoors as a perennial. Plant the basil in a window box or other container. Keep the plant in a well-lit window year-round. Pinch off the seed heads as soon as they appear to keep the plant producing new leaves.