When to plant tomato in Indianapolis
Tomato is frost-tender, so every date keys off Indianapolis's last spring frost of Apr 17.
Step 1 · Sow
Start seeds indoors
Mar 22 – Apr 12
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 18 – Jun 8
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 17 – Aug 11
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Indianapolis's 178-day season leaves this much room.
Tomato on Indianapolis'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 17
OCT 14
Common questions
When will tomato be ready to harvest in Indianapolis?
Expect to harvest from around mid July (Jul 17–Aug 11) in Indianapolis, based on its local frost dates. Confidence 75%.
When should I start tomato seeds indoors in Indianapolis?
Start seeds indoors around late March (Mar 22–Apr 12) in Indianapolis, based on its local frost dates. Confidence 79%.
When can I transplant tomato outdoors in Indianapolis?
Transplant outdoors around mid May (May 18–Jun 8) in Indianapolis, based on its local frost dates. Confidence 81%.
How long is the growing season in Indianapolis?
Indianapolis has roughly 178 frost-free days, which is enough time to grow tomato to maturity outdoors.
The rule of thumb
Sow tomato 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 Indianapolis's frost dates.
Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.