When to plant eggplant in Grand Rapids
Eggplant is frost-tender, so every date keys off Grand Rapids's last spring frost of Apr 30.
Step 1 · Sow
Start seeds indoors
Mar 21 – Apr 11
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 8 – Jun 29
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 17 – Sep 1
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Grand Rapids's 166-day season leaves this much room.
Eggplant on Grand Rapids'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 30
OCT 16
Common questions
When will eggplant be ready to harvest in Grand Rapids?
Expect to harvest from around mid August (Aug 17–Sep 1) in Grand Rapids, based on its local frost dates. Confidence 78%.
When should I start eggplant seeds indoors in Grand Rapids?
Start seeds indoors around late March (Mar 21–Apr 11) in Grand Rapids, based on its local frost dates. Confidence 83%.
When can I transplant eggplant outdoors in Grand Rapids?
Transplant outdoors around early June (Jun 8–Jun 29) in Grand Rapids, based on its local frost dates. Confidence 84%.
How long is the growing season in Grand Rapids?
Grand Rapids has roughly 166 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 Grand Rapids's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.