When to plant bush (snap) bean in Duluth
Bush (snap) bean is frost-tender, so every date keys off Duluth's last spring frost of May 10.
Step 1 · Sow
Direct sow outdoors
Jul 3 – Jul 24
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Aug 22 – Sep 1
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Duluth's 150-day season leaves this much room.
Bush (snap) bean 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 can I sow bush (snap) bean outdoors in Duluth?
Direct-sow around early July (Jul 3–Jul 24) in Duluth, based on its local frost dates. Confidence 84%.
When will bush (snap) bean be ready to harvest in Duluth?
Expect to harvest from around late August (Aug 22–Sep 1) in Duluth, based on its local frost dates. Confidence 78%.
How long is the growing season in Duluth?
Duluth has roughly 150 frost-free days, which is enough time to grow bush (snap) bean to maturity outdoors.
The rule of thumb
Sow bush (snap) bean 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.