When to plant bush (snap) bean in Calgary
Bush (snap) bean is frost-tender, so every date keys off Calgary's last spring frost of May 23.
Step 1 · Sow
Direct sow outdoors
May 30 – Jun 20
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 19 – Jul 29
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Calgary's 115-day season leaves this much room.
Bush (snap) bean on Calgary'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 23
SEP 15
Common questions
When can I sow bush (snap) bean outdoors in Calgary?
Direct-sow around late May (May 30–Jun 20) in Calgary, based on its local frost dates. Confidence 82%.
When will bush (snap) bean be ready to harvest in Calgary?
Expect to harvest from around mid July (Jul 19–Jul 29) in Calgary, based on its local frost dates. Confidence 74%.
How long is the growing season in Calgary?
Calgary has roughly 115 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 Calgary's frost dates.
Confidence 82/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.