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When to Plant Arugula in Bullhead, South Dakota (57621)

Location

Bullhead, South Dakota

ZIP Code

57621

USDA Zone

4b

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Direct Sow Outdoors Tuesday, April 7, 2026

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

🌿 Plant Details

Scientific Name Eruca vesicaria subsp. sativa
Days to Maturity 40 days
Mature Height 6-12"
Spread 6"
Type Leaf
Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Regular (keep moist)

↔️

Spacing

6" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 3-7 days

Ready to Plant Arugula in Bullhead?

Get your seeds now so they're ready by Tuesday, April 7, 2026.

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Growing Arugula in Zone 4b

Arugula (Eruca vesicaria subsp. sativa) is a popular garden vegetable. In Bullhead, South Dakota, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, April 7, 2026.

Your average last frost date is Tuesday, May 5, 2026. Arugula grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.