When to Plant Watercress in Zone 4
In USDA zone 4, plant outdoors May 1 to June 20, and expect your first harvest around June 20.
Watercress planting calendar for USDA Zone 4
Direct sow
May 1
Projected first harvest
Jun 20
Watercress is ready to harvest in about 50 days. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for watercress
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and watercress need about 50 days to mature.
Varieties to grow
1 variety of watercress in the HomeSown library. Tap any for its full grow guide.
Common problems with watercress
What to watch for, with identification and treatment for each
🌱 Grow watercress with a calendar built for your exact yard
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →