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When to Plant Nasturtium in Napakiak, Alaska (99634)

Location

Napakiak, Alaska

ZIP Code

99634

USDA Zone

4a

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, May 22, 2026

Pro Tip: Sow Nasturtium directly outdoors 1 week after your last frost date — it needs warm soil.

🌿 Plant Details

Scientific Name Tropaeolum majus
Days to Maturity 60 days
Mature Height 12-18"
Spread 18"
Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Low (drought tolerant)

↔️

Spacing

12" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 7-14 days

Ready to Plant Nasturtium in Napakiak?

Get your seeds now so they're ready by Friday, May 22, 2026.

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🤝 Good Companions

TomatoCucumberSquashRadish

⚠️ Avoid Planting Near

Fennel

Other Plants for Napakiak

Growing Nasturtium in Zone 4a

Nasturtium (Tropaeolum majus) is a popular garden vegetable. In Napakiak, Alaska, which is in USDA Hardiness Zone 4a, you should direct sow seeds around Friday, May 22, 2026.

Your average last frost date is Friday, May 15, 2026. Nasturtium grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.