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When to Plant Mustard Greens in Northwest Territories

Mustard greens are fast-growing brassicas with a spicy, peppery kick. They come in green, red, and purple varieties and are excellent cooked or in salads.

Northwest Territories spans USDA hardiness zones 2b, 3a (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

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Click your county for exact Mustard Greens planting dates based on your local frost dates.

Mustard Greens Planting Calendar for Northwest Territories

โ–ธ Zone 2b ~111 day growing season ยท Full guide โ†’

Last frost: May 22 ยท First frost: September 10 ยท 111 day season

Activity When Date Range
Start Indoors April 10 Apr 10 โ€“ Apr 24
Transplant Outdoors May 22 May 22 โ€“ Jun 5
Direct Sow May 15 May 15 โ€“ Jun 5
Fall Sowing June 18 Jun 18 โ€“ Jul 2
Harvest June 26 Jun 26 โ€“ Aug 28
โ–ธ Zone 3a ~123 day growing season ยท Full guide โ†’

Last frost: May 15 ยท First frost: September 15 ยท 123 day season

Activity When Date Range
Start Indoors April 3 Apr 3 โ€“ Apr 17
Transplant Outdoors May 15 May 15 โ€“ May 29
Direct Sow May 8 May 8 โ€“ May 29
Fall Sowing June 23 Jun 23 โ€“ Jul 7
Harvest June 19 Jun 19 โ€“ Aug 21

Growing Tips for Northwest Territories

Direct sow in early spring or fall. Harvest young leaves for milder flavor. Plants bolt quickly in heat so grow as a cool-season crop or provide shade.

Frequently Asked Questions

When should I plant Mustard Greens in Northwest Territories?

Planting dates for Mustard Greens in Northwest Territories depend on your USDA zone. Northwest Territories spans zones 2b, 3a. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Northwest Territories for planting?

Northwest Territories contains USDA hardiness zones 2b, 3a. Your specific zone depends on your location within the state โ€” northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.