When to plant sweet potato in Louisville
Sweet potato is frost-tender, so every date keys off Louisville's last spring frost of Apr 1.
Step 1 · Plant
Transplant outdoors
May 17 – Jun 7
Once frost risk has passed and nights stay mild.
Step 2 · Harvest
Harvest window
Aug 15 – Sep 14
Picking runs until conditions turn against the crop.
Window
Days to maturity
90 – 120 d
Louisville's 212-day season leaves this much room.
Sweet potato on Louisville's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 1
OCT 29
Common questions
When will sweet potato be ready to harvest in Louisville?
Expect to harvest from around mid August (Aug 15–Sep 14) in Louisville, based on its local frost dates. Confidence 74%.
When can I transplant sweet potato outdoors in Louisville?
Transplant outdoors around mid May (May 17–Jun 7) in Louisville, based on its local frost dates. Confidence 80%.
How long is the growing season in Louisville?
Louisville has roughly 212 frost-free days, which is enough time to grow sweet potato to maturity outdoors.
The rule of thumb
Sow sweet potato 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Louisville's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.