When to plant eggplant in Denver
Eggplant is frost-tender, so every date keys off Denver's last spring frost of May 4.
Step 1 · Sow
Start seeds indoors
Mar 26 – Apr 16
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 7 – Jun 28
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 16 – Aug 31
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Denver's 157-day season leaves this much room.
Eggplant on Denver'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 4
OCT 10
Common questions
When will eggplant be ready to harvest in Denver?
Expect to harvest from around mid August (Aug 16–Aug 31) in Denver, based on its local frost dates. Confidence 76%.
When should I start eggplant seeds indoors in Denver?
Start seeds indoors around late March (Mar 26–Apr 16) in Denver, based on its local frost dates. Confidence 81%.
When can I transplant eggplant outdoors in Denver?
Transplant outdoors around early June (Jun 7–Jun 28) in Denver, based on its local frost dates. Confidence 82%.
How long is the growing season in Denver?
Denver has roughly 157 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 Denver's frost dates.
Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.