When to plant pepper (sweet & chili) in Seattle
Pepper (sweet & chili) is frost-tender, so every date keys off Seattle's last spring frost of Mar 17.
Step 1 · Sow
Start seeds indoors
Feb 16 – Mar 9
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jul 5 – Jul 26
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 8 – Oct 3
Picking runs until conditions turn against the crop.
Window
Days to maturity
65 – 90 d
Seattle's 237-day season leaves this much room.
Pepper (sweet & chili) on Seattle'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 17
NOV 13
Common questions
When will pepper (sweet & chili) be ready to harvest in Seattle?
Expect to harvest from around early September (Sep 8–Oct 3) in Seattle, based on its local frost dates. Confidence 75%.
When should I start pepper (sweet & chili) seeds indoors in Seattle?
Start seeds indoors around mid February (Feb 16–Mar 9) in Seattle, based on its local frost dates. Confidence 79%.
When can I transplant pepper (sweet & chili) outdoors in Seattle?
Transplant outdoors around early July (Jul 5–Jul 26) in Seattle, based on its local frost dates. Confidence 81%.
How long is the growing season in Seattle?
Seattle has roughly 237 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 Seattle's frost dates.
Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.