Introduction: Why Grow Onions from Sets?
Onions (Allium cepa) are a kitchen staple—versatile, shelf-stable, and easy to grow. While you can start onions from seeds or transplants, onion sets (small, dormant onion bulbs sold in bags) are the fastest and most foolproof option for home gardeners. They skip the slow seedling stage, resist pests better than seeds, and produce mature bulbs in a fraction of the time.
But how long exactly do onion sets take to grow? The answer depends on your climate, the type of onion (long-day vs. short-day), and when you plant—but most sets mature in 90–120 days. This guide breaks down the full onion set growth timeline, key factors that affect speed, and tips to ensure a bountiful harvest of crisp, sweet onions.… Read the rest