Scallion Onion Tokyo Long White (Allium fistulosum), also known as Japanese Bunching Onion, is a non-bulbing, fast-growing, and hardy variety prized for its long, slender white stalks and mild onion flavor. This versatile onion can be grown year-round in many climates and is excellent for salads, stir-fries, soups, and garnishes.

How to Grow Tokyo Long White Scallions

Sowing and Germination

• Direct Sowing: Sow seeds directly in the garden as soon as the soil can be worked in early spring. In mild climates, sow in fall for a winter harvest.
• Indoor Start: Start indoors 8–10 weeks before the last frost for an early harvest. Sow seeds 1/4 inch deep in trays or containers with well-draining soil.
• Germination Time: Seeds typically germinate in 7–14 days at a temperature of 60–75°F.

Transplanting:

• Harden off seedlings for 7–10 days before transplanting them outdoors.
• Transplant when seedlings are about 4–6 inches tall.

Plant Spacing:

• Sow seeds or transplant 1–2 inches apart in rows 12 inches apart for bunching onions.
• If growing for longer, thicker stalks, thin to 3–4 inches apart.

Soil Requirements:

• Prefers well-drained, sandy, or loamy soil with a pH of 6.0–7.0.
• Enrich soil with compost or organic matter for optimal growth.

Sunlight:

• Requires full sun, at least 6–8 hours daily.
• Can tolerate partial shade but grows best in direct sunlight.

Growing Tokyo Long White Scallions

Watering:

• Water consistently to keep the soil evenly moist but not soggy.
• Scallions have shallow roots, so they require frequent watering, especially in dry conditions.

Mulching:

• Apply a thin layer of organic mulch to retain moisture and suppress weeds.

Fertilizing:

• Apply a balanced nitrogen-rich fertilizer every 2–3 weeks to encourage leaf growth.
• Avoid over-fertilizing, as excessive nitrogen can lead to weaker stalks.

Blanching for Longer White Stems:

• As the onions grow, mound soil around the base to blanch the stems and produce longer white sections.
• Alternatively, use a paper collar or plastic tube to achieve the same effect.

Pest and Disease Management:

• Scallions are relatively pest-resistant but watch for onion thrips and aphids.
• Use neem oil or insecticidal soap if pests appear.
• Practice crop rotation to prevent fungal diseases like onion rust.

Fast Facts

• Latin Name: Allium fistulosum
• Type: Heirloom, Open-Pollinated, Non-Bulbing Scallion
• USDA Zones: 3–12
• Days to Germination: 7–14 days
• Days to Maturity: 60–80 days (can be harvested earlier as baby scallions)
• Sunlight: Full Sun to Partial Shade
• Spacing: 1–2 inches apart for bunching; 3–4 inches for larger stalks
• Soil pH: 6.0–7.0
• Color: White stalks with green tops

How and When to Harvest Tokyo Long White Scallions

• Harvest as young scallions at 6–8 inches tall (about 30–40 days after planting) for tender, mild flavor.
• For fully mature scallions, wait 60–80 days for longer, thicker stalks.
• Cut at the base of the stalk and leave the roots in the soil for continuous regrowth.
• Harvest regularly to encourage new growth and extend the season.

Tokyo Long White Scallion Seed Saving

• Scallions are biennial, producing seeds in their second year.
• Allow some plants to flower and set seed. Once seed heads dry, collect the seeds and store them in a cool, dry place.
• Properly stored seeds remain viable for 2–3 years.

Tokyo Long White Scallions are an easy-to-grow, flavorful, and productive onion variety that can be harvested at different stages. Their mild taste and tender texture make them a favorite for fresh and cooked dishes. Enjoy a continuous harvest by growing them in succession throughout the season! 🌱