When to Plant Broccoli Raab in Kalispell, Montana (59901)

Location

Kalispell, Montana

ZIP Code

59901

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Direct Sow Outdoors Saturday, March 14, 2026

Pro Tip: Sow Broccoli Raab directly outdoors 6 weeks before your last frost date.

🌿 Plant Details

Scientific Name Brassica rapa subsp. rapa

Days to Maturity 60 days

Mature Height 12-24"

Spread 8"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

6" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-7 days

Ready to Plant Broccoli Raab in Kalispell?

Get your seeds now so they're ready by Saturday, March 14, 2026.

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🤝 Good Companions

OnionBeetCelery

⚠️ Avoid Planting Near

TomatoPepperStrawberry

Other Plants for Kalispell

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Growing Broccoli Raab in Zone 5b

Broccoli Raab (Brassica rapa subsp. rapa) is a popular garden vegetable. In Kalispell, Montana, which is in USDA Hardiness Zone 5b, you should direct sow seeds around Saturday, March 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Broccoli Raab grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.