When to plant basil in Toulouse
Basil is frost-tender, so every date keys off Toulouse's last spring frost of Mar 8.
Step 1 · Sow
Start seeds indoors
Mar 3 – Mar 24
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 19 – Jun 9
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 18 – Aug 17
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 90 d
Toulouse's 260-day season leaves this much room.
Basil on Toulouse'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
MAR 8
NOV 20
Common questions
When can I sow basil outdoors in Toulouse?
Direct-sow around mid May (May 19–Jun 9) in Toulouse, based on its local frost dates. Confidence 86%.
When will basil be ready to harvest in Toulouse?
Expect to harvest from around mid July (Jul 18–Aug 17) in Toulouse, based on its local frost dates. Confidence 80%.
When should I start basil seeds indoors in Toulouse?
Start seeds indoors around early March (Mar 3–Mar 24) in Toulouse, based on its local frost dates. Confidence 85%.
When can I transplant basil outdoors in Toulouse?
Transplant outdoors around mid May (May 19–Jun 9) in Toulouse, based on its local frost dates. Confidence 86%.
How long is the growing season in Toulouse?
Toulouse has roughly 260 frost-free days, which is enough time to grow basil to maturity outdoors.
The rule of thumb
Sow basil 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 Toulouse's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.