When to Plant Onion in Galena, Alaska (99741)

Location

Galena, Alaska

ZIP Code

99741

USDA Zone

Last Frost

Wednesday, June 10, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, April 15, 2026

Transplant Outdoors Wednesday, June 24, 2026

Pro Tip: Start Onion seeds indoors 8 weeks before your last frost date, then transplant outdoors around Wednesday, June 24, 2026.

🌿 Plant Details

Scientific Name Allium cepa

Days to Maturity 100 days

Mature Height 12-18"

Spread 4"

Type Bulb

Fruit Size Medium (2-4 inch bulb)

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Moderate

↔️

Spacing

4" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 7-10 days

Ready to Plant Onion in Galena?

Get your seeds now so they're ready by Wednesday, April 15, 2026.

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🤝 Good Companions

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⚠️ Avoid Planting Near

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Other Plants for Galena

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Growing Onion in Zone 1b

Onion (Allium cepa) is a popular garden vegetable. In Galena, Alaska, which is in USDA Hardiness Zone 1b, you should start seeds indoors around Wednesday, April 15, 2026.

Your average last frost date is Wednesday, June 10, 2026. Plan to transplant your Onion seedlings outdoors around Wednesday, June 24, 2026, about 2 weeks after your last frost date.