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Also known as spring onion, Welsh bunching onion, Japanese leek or stone leek, Welsh onion (Allium fistulosum) is a compact, clumping plant cultivated for its ornamental value and mild, chive-like flavor.
Growing Welsh onions is a cinch, so don’t hesitate to plant these tasty, attractive plants where you can enjoy the hollow, grassy leaves and chive-like blooms.
Plant Welsh onion seeds indoors in March, using a regular commercial potting soil. Keep the soil lightly moist until the seeds germinate, which generally takes seven to 10 days. Plant the seedlings in your garden after about a month, when all danger of frost has passed. Full sun is best, but Welsh onion plants tolerate a bit of light shade. Allow about 8 inches between each seedling.
Simply dig up clumps and pull them into individual bulbs, then replant the bulbs in soil that has been cultivated ahead of time. Dig an inch or two of compost into the soil to get the plants off to a good start.