Starting plants from seed has many practical benefits: You save money, get a head start on the growing season, and choose from varieties far beyond those locally available. By starting seeds, you also get to experience the joy of watching a seemingly lifeless seed sprout into a living plant.
A seed is a plant embryo and its initial food supply is stored within a protective coating. Seeds remain dormant until a combination of moisture, temperature, air, and light triggers germination.
Seeds have different shelf lives. Some will remain viable for hundreds of years, whereas others may only store well for a couple of years.
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Seed-Starting Essentials