When to Plant Brussel Sprout in Deer Lodge, Montana (59722)
Location
Deer Lodge, Montana
ZIP Code
59722
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
📅 Planting Calendar
Direct Sow Outdoors Tuesday, March 24, 2026
Pro Tip: Brussel Sprout can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Brassica oleracea
Days to Maturity 84 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 1-7 days
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Growing Brussel Sprout in Zone 4b
Brussel Sprout (Brassica oleracea) is a popular garden vegetable. In Deer Lodge, Montana, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, March 24, 2026.
Your average last frost date is Tuesday, May 5, 2026. Brussel Sprout grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.