When to Plant Sweet Potatoes in Zone 9
In USDA zone 9a, plant outdoors March 29 to July 7, and expect your first harvest around July 7. (9a shown here — see 9a and 9b dates separately below.)
Sweet Potatoes planting calendar for USDA Zone 9a
Average last spring frost
March 1
Average first fall frost
December 1
Direct sow
Mar 29
Projected first harvest
Jul 7
Most sweet potatoes mature in about 100 days, needing roughly 275 frost-free days in zone 9a.
Sweet Potatoes planting calendar for USDA Zone 9b
Average last spring frost
February 15
Average first fall frost
December 15
Direct sow
Mar 15
Projected first harvest
Jun 23
Most sweet potatoes mature in about 100 days, needing roughly 303 frost-free days in zone 9b.
Not sure whether you're in 9a or 9b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
2 varieties of sweet potatoes in the HomeSown library. Tap any for its full grow guide.
Common problems with sweet potatoes
What to watch for, with identification and treatment for each
🌱 Grow sweet potatoes 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 →