When to plant tomato in Lyon
Tomato is frost-tender, so every date keys off Lyon's last spring frost of Apr 15.
Step 1 · Sow
Start seeds indoors
Mar 4 – Mar 25
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 22 – May 13
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 21 – Jul 16
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Lyon's 193-day season leaves this much room.
Tomato on Lyon'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 15
OCT 25
Common questions
When will tomato be ready to harvest in Lyon?
Expect to harvest from around late June (Jun 21–Jul 16) in Lyon, based on its local frost dates. Confidence 77%.
When should I start tomato seeds indoors in Lyon?
Start seeds indoors around early March (Mar 4–Mar 25) in Lyon, based on its local frost dates. Confidence 82%.
When can I transplant tomato outdoors in Lyon?
Transplant outdoors around late April (Apr 22–May 13) in Lyon, based on its local frost dates. Confidence 86%.
How long is the growing season in Lyon?
Lyon has roughly 193 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 Lyon's frost dates.
Confidence 86/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.