When to plant pepper (sweet & chili) in Duluth
Pepper (sweet & chili) is frost-tender, so every date keys off Duluth's last spring frost of May 10.
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
Jul 14 – Aug 4
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 17 – Oct 12
Picking runs until conditions turn against the crop.
Window
Days to maturity
65 – 90 d
Duluth's 150-day season leaves this much room.
Pepper (sweet & chili) on Duluth'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 10
OCT 7
Common questions
When will pepper (sweet & chili) be ready to harvest in Duluth?
Expect to harvest from around mid September (Sep 17–Oct 12) in Duluth, based on its local frost dates. Confidence 78%.
When should I start pepper (sweet & chili) seeds indoors in Duluth?
Start seeds indoors around late March (Mar 27–Apr 17) in Duluth, based on its local frost dates. Confidence 83%.
When can I transplant pepper (sweet & chili) outdoors in Duluth?
Transplant outdoors around mid July (Jul 14–Aug 4) in Duluth, based on its local frost dates. Confidence 84%.
How long is the growing season in Duluth?
Duluth has roughly 150 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 Duluth's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.