When to Plant Watercress in Zone 10
In USDA zone 10a, plant outdoors January 16 to March 7, and expect your first harvest around March 7. (10a shown here — see 10a and 10b dates separately below.)
Watercress planting calendar for USDA Zone 10a
Average last spring frost
January 30
Average first fall frost
December 30
Direct sow
Jan 16
Projected first harvest
Mar 7
Watercress is ready to harvest in about 50 days, needing roughly 334 frost-free days in zone 10a.
Watercress planting calendar for USDA Zone 10b
Average last spring frost
January 30
Average first fall frost
December 30
Direct sow
Jan 16
Projected first harvest
Mar 7
Watercress is ready to harvest in about 50 days, needing roughly 334 frost-free days in zone 10b.
Not sure whether you're in 10a or 10b? Set your ZIP in HomeSown for dates tuned to your exact location.
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 →