Evergreen White Nebuka Onion Seeds

Allium Fistulosum
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About

Evergreen White Nebuka Allium Fistulosum (Allium Fistulosum) is a cold-hardy heirloom onion that produces long white shanks and deep green tops. Prized for its crisp, mild stalks and ability to overwinter, this variety doesn't form a bulb at all. Cut it back, and the clump regrows. Evergreen white Allium Fistulosum is compact, reaching only 14–24 inches tall, so it suits for raised beds, containers or in a regular garden. The variety is perennial in zones 2–9 and overwinters as a tender perennial in USDA Zones 10–11. 

Quick Facts

Life Cycle
Life Cycle Perennial
USDA Zones
USDA Zones 03–10
Light Requirements
Light Requirements Full sun
Germination Time
Germination Time 7-10 days
Stratification
Stratification Not required
Spacing
Spacing 2-4 inches
Sowing Method
Sowing Method Direct Sow; Start Indoors
Soil
Soil Well-drained
Flowering Period
Flowering Period -
Water Requirements
Water Requirements Moderate (regular watering)
Maturity Time
Maturity Time 60-70 days
Growing Habit
Growing Habit Upright

How to Grow & Harvest

Sowing & Timing

Sow Evergreen White Nebuka Onion seeds 0.25 inch deep, either indoors 8–10 weeks before last frost or directly in the garden in spring or fall. Germination happens in 7–10 days when soil temperature is between 50°F and 80°F.. Gardeners in zones 10–11 get the best results from a fall planting. Once seedlings are up, thin them to 2–4 inches apart with 12–15 inches between rows.

Soil, Watering & Fertilization

Evergreen Long White Allium Fistulosum requires at least 6 hours of direct sunlight daily. Soil should be well-drained, since wet feet cause rot. Choose loose soil as heavy clay without amendment will cause problems. Water consistently during establishment, then reduce waterings. Evergreen White Nebuka Onion genuinely prefers cool weather, so spring and fall plantings will outperform a midsummer sowing in most climates.

Growth & Harvest

This onion variety is genuinely low-maintenance. All you have to do is divide clumps every few years so they don't get overcrowded, and that's mostly it. To harvest, either pull the whole plant when shanks are developed, or cut the green tops an inch above soil level and let the plant regrow. White shanks work raw or cooked; green tops go into soups, stir fry, and chilis. In zone 4 and warmer, established clumps typically come back each spring without any special winter care.

FAQ

Are Bunching Onion seeds non-GMO?

Yes, at KVITER you can buy non-GMO, open-pollinated, and heirloom evergreen white Allium Fistulosum seeds. Order Evergreen Long White Allium Fistulosum seeds online at KVITER and enjoy premium quality and high germination rates. We also offer free delivery on all orders above $49.

Can Allium Fistulosums be grown in containers?

Yes. A pot at least 8 inches deep suits well. Use well-draining mix, give it full sun, and water more frequently than you would in-ground, as containers dry out faster. It's one of the more practical vegetables to grow on a balcony or patio.

What are good companion plants?

Carrots, tomatoes, and brassicas like cabbage and kale are good companions. The onion's scent deters aphids and some soil pests, which is helpful for nearby crops. However, don’t plant onions next to beans and peas, as they don't grow well together.

Does this variety bolt quickly?

No — Evergreen White Nebuka is specifically selected to be slow to bolt. That's actually one of its main selling points: it stays in the harvestable, vegetative stage longer than most Allium Fistulosum varieties, which means a longer and more consistent harvest window.