When to plant melon (cantaloupe/watermelon) in Louisville

Melon (cantaloupe/watermelon) is frost-tender, so every date keys off Louisville's last spring frost of Apr 1.
Step 1 · Sow
Start seeds indoors
Mar 27 – Apr 17
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 4 – Jun 25
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 18 – Sep 12
Picking runs until conditions turn against the crop.
Window
Days to maturity
75 – 100 d
Louisville's 212-day season leaves this much room.
Melon (cantaloupe/watermelon) 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
APR 1
OCT 29

Common questions

When can I sow melon (cantaloupe/watermelon) outdoors in Louisville?

Direct-sow around early June (Jun 4–Jun 25) in Louisville, based on its local frost dates. Confidence 80%.

When will melon (cantaloupe/watermelon) be ready to harvest in Louisville?

Expect to harvest from around mid August (Aug 18–Sep 12) in Louisville, based on its local frost dates. Confidence 74%.

When should I start melon (cantaloupe/watermelon) seeds indoors in Louisville?

Start seeds indoors around late March (Mar 27–Apr 17) in Louisville, based on its local frost dates. Confidence 78%.

When can I transplant melon (cantaloupe/watermelon) outdoors in Louisville?

Transplant outdoors around early June (Jun 4–Jun 25) 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 melon (cantaloupe/watermelon) to maturity outdoors.

The rule of thumb

Sow melon (cantaloupe/watermelon) 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.