When to plant bush (snap) bean in Missoula
Bush (snap) bean is frost-tender, so every date keys off Missoula's last spring frost of May 15.
Step 1 · Sow
Direct sow outdoors
Jul 2 – Jul 23
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Aug 21 – Aug 31
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Missoula's 138-day season leaves this much room.
Bush (snap) bean on Missoula'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 15
OCT 4
Common questions
When can I sow bush (snap) bean outdoors in Missoula?
Direct-sow around early July (Jul 2–Jul 23) in Missoula, based on its local frost dates. Confidence 81%.
When will bush (snap) bean be ready to harvest in Missoula?
Expect to harvest from around late August (Aug 21–Aug 31) in Missoula, based on its local frost dates. Confidence 75%.
How long is the growing season in Missoula?
Missoula has roughly 138 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 Missoula's frost dates.
Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.