When to plant eggplant in Montreal
Eggplant is frost-tender, so every date keys off Montreal's last spring frost of May 11.
Step 1 · Sow
Start seeds indoors
Mar 16 – Apr 6
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 25 – Jun 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 3 – Aug 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Montreal's 142-day season leaves this much room.
Eggplant on Montreal'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 11
SEP 30
Common questions
When will eggplant be ready to harvest in Montreal?
Expect to harvest from around early August (Aug 3–Aug 18) in Montreal, based on its local frost dates. Confidence 77%.
When should I start eggplant seeds indoors in Montreal?
Start seeds indoors around mid March (Mar 16–Apr 6) in Montreal, based on its local frost dates. Confidence 82%.
When can I transplant eggplant outdoors in Montreal?
Transplant outdoors around late May (May 25–Jun 15) in Montreal, based on its local frost dates. Confidence 86%.
How long is the growing season in Montreal?
Montreal has roughly 142 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 Montreal's frost dates.
Confidence 86/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.