When to plant pepper (sweet & chili) in Sapporo
Pepper (sweet & chili) is frost-tender, so every date keys off Sapporo's last spring frost of May 5.
Step 1 · Sow
Start seeds indoors
Mar 10 – Mar 31
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 23 – Aug 17
Picking runs until conditions turn against the crop.
Window
Days to maturity
65 – 90 d
Sapporo's 173-day season leaves this much room.
Pepper (sweet & chili) on Sapporo'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
MAY 5
OCT 25
Common questions
When will pepper (sweet & chili) be ready to harvest in Sapporo?
Expect to harvest from around late July (Jul 23–Aug 17) in Sapporo, based on its local frost dates. Confidence 76%.
When should I start pepper (sweet & chili) seeds indoors in Sapporo?
Start seeds indoors around early March (Mar 10–Mar 31) in Sapporo, based on its local frost dates. Confidence 80%.
When can I transplant pepper (sweet & chili) outdoors in Sapporo?
Transplant outdoors around mid May (May 19–Jun 9) in Sapporo, based on its local frost dates. Confidence 84%.
How long is the growing season in Sapporo?
Sapporo has roughly 173 frost-free days, which is enough time to grow pepper (sweet & chili) to maturity outdoors.
The rule of thumb
Sow pepper (sweet & chili) 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 Sapporo's frost dates.
Confidence 84/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.