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When to Plant Dill in Seattle, Washington (98103)

Location

Seattle, Washington

ZIP Code

98103

USDA Zone

9a

Last Frost

Friday, February 20, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, January 23, 2026

Pro Tip: Sow Dill directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Anethum graveolens
Days to Maturity 40 days
Mature Height 24-36"
Spread 12"
Type Leaf
Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Dill in Seattle?

Get your seeds now so they're ready by Friday, January 23, 2026.

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🤝 Good Companions

CabbageOnionLettuceCucumber

⚠️ Avoid Planting Near

CarrotTomato

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Growing Dill in Zone 9a

Dill (Anethum graveolens) is a popular garden vegetable. In Seattle, Washington, which is in USDA Hardiness Zone 9a, you should direct sow seeds around Friday, January 23, 2026.

Your average last frost date is Friday, February 20, 2026. Dill grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.