When to plant pole bean in Pittsburgh
Pole bean is frost-tender, so every date keys off Pittsburgh's last spring frost of Apr 17.
Step 1 · Sow
Direct sow outdoors
May 11 – Jun 1
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 10 – Jul 20
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 70 d
Pittsburgh's 188-day season leaves this much room.
Pole bean on Pittsburgh'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
APR 17
OCT 25
Common questions
When can I sow pole bean outdoors in Pittsburgh?
Direct-sow around mid May (May 11–Jun 1) in Pittsburgh, based on its local frost dates. Confidence 79%.
When will pole bean be ready to harvest in Pittsburgh?
Expect to harvest from around early July (Jul 10–Jul 20) in Pittsburgh, based on its local frost dates. Confidence 73%.
How long is the growing season in Pittsburgh?
Pittsburgh has roughly 188 frost-free days, which is enough time to grow pole bean to maturity outdoors.
The rule of thumb
Sow pole 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 Pittsburgh's frost dates.
Confidence 81/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.