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When to Plant Watercress in Northwest Territories

Watercress is a semi-aquatic plant with a peppery, tangy flavor rich in vitamins and minerals. It grows naturally along streams and can be cultivated in containers with standing water.

Northwest Territories spans USDA hardiness zones 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 Watercress planting dates based on your local frost dates.

Watercress Planting Calendar for Northwest Territories

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
Harvest June 26 Jun 26 โ€“ Jul 31
Fall Sowing June 23 Jun 23 โ€“ Jul 7

Growing Tips for Northwest Territories

Grow in containers with trays of water kept fresh. Provide partial shade and cool conditions. Harvest stems by cutting above water level. Replace water frequently to prevent stagnation.

Frequently Asked Questions

When should I plant Watercress in Northwest Territories?

Planting dates for Watercress in Northwest Territories depend on your USDA zone. Northwest Territories spans zones 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 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.