📍 Cascade, MT · Zone 4b · Last frost Tuesday, May 5, 2026
✏️ ChangeWhen to Plant Mâche in Cascade, Montana (59421)
Location
Cascade, Montana
ZIP Code
59421
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
📅 Your 2026 Planting Dates
Direct Sow Outdoors
Tuesday, March 24, 2026
Based on last frost Tuesday, May 5, 2026 · Zone 4b
Pro tip: Sow Mâche directly outdoors 6 weeks before your last frost date.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Partial Shade to Full Sun
💧
Water
Moderate (1 inch/week)
↔️
Spacing
4" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 7-14 days
Ready to Plant Mâche in Cascade?
Get your seeds now so they're ready by Tuesday, March 24, 2026.
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🤝 Good Companions
Full Companion Planting Guide for Mâche
See which plants help Mâche thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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🌾 Seed Saving Guide
🟢 EasyWhen to Harvest Seed
Allow plants to flower and seed pods to dry on the plant.
Processing
Thresh dried plants over a bowl, separate seeds from chaff by winnowing.
Seed Viability
Up to 3 years when stored cool, dark, and dry.
Pro Tip
Mâche self-sows freely — allow some plants to go to seed in place for a perpetual crop.
Raised Bed Planting Guides
A 4×8 bed fits 9 per sq ft of Mâche. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Mâche in Cascade, Montana? +
In Cascade (Zone 4b), direct sow Mâche outdoors around Tuesday, March 24, 2026.
What is the last frost date for Cascade, Montana? +
The average last spring frost date for Cascade, Montana (ZIP 59421) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.
How long does Mâche take to grow? +
Mâche typically matures in about 45 days from direct sowing. In Cascade, that means you can expect harvest around Tuesday, March 24, 2026 plus 45 days.
Should I start Mâche indoors or direct sow in Montana? +
Mâche does best when direct sown outdoors. In Cascade, sow directly around Tuesday, March 24, 2026.
Other Plants for Cascade
Growing Mâche in Zone 4b
Mâche (Valerianella locusta) is a popular garden vegetable. In Cascade, 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. Mâche grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.