When to plant eggplant in Riverside
Eggplant is frost-tender, so every date keys off Riverside's last spring frost of Feb 16.
Step 1 · Sow
Start seeds indoors
Feb 5 – Feb 26
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 1 – May 22
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 10 – Jul 25
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 85 d
Riverside's 293-day season leaves this much room.
Eggplant on Riverside'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
FEB 16
DEC 6
Common questions
When will eggplant be ready to harvest in Riverside?
Expect to harvest from around early July (Jul 10–Jul 25) in Riverside, based on its local frost dates. Confidence 70%.
When should I start eggplant seeds indoors in Riverside?
Start seeds indoors around early February (Feb 5–Feb 26) in Riverside, based on its local frost dates. Confidence 74%.
When can I transplant eggplant outdoors in Riverside?
Transplant outdoors around early May (May 1–May 22) in Riverside, based on its local frost dates. Confidence 76%.
How long is the growing season in Riverside?
Riverside has roughly 293 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 Riverside's frost dates.
Confidence 78/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.