When to plant eggplant in Calgary
Eggplant is frost-tender, so every date keys off Calgary's last spring frost of May 23.
Step 1 · Sow
Start seeds indoors
Mar 28 – Apr 18
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 6 – Jun 27
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 15 – Aug 30
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Calgary's 115-day season leaves this much room.
Eggplant 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 will eggplant be ready to harvest in Calgary?
Expect to harvest from around mid August (Aug 15–Aug 30) in Calgary, based on its local frost dates. Confidence 74%.
When should I start eggplant seeds indoors in Calgary?
Start seeds indoors around late March (Mar 28–Apr 18) in Calgary, based on its local frost dates. Confidence 78%.
When can I transplant eggplant outdoors in Calgary?
Transplant outdoors around early June (Jun 6–Jun 27) in Calgary, based on its local frost dates. Confidence 82%.
How long is the growing season in Calgary?
Calgary has roughly 115 frost-free days, which is enough time to grow eggplant to maturity outdoors.
The rule of thumb
Sow eggplant 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.