When to plant Eggplant in Idaho

In spring, from May 1 – June 1 in Lewiston to June 1 – 15 in Garden City.

In fall, from May 15 – June 15 in Caldwell to June 1 – July 1 in Rathdrum.

Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Eggplant planting dates by place in Idaho
PlaceSpringFall
AmmonMay 20 – June 15May 20 – June 10
BlackfootMay 15 – June 10May 20 – June 10
Boise CityMay 10 – June 1June 1 – July 1
BurleyMay 20 – June 15May 20 – June 10
CaldwellMay 15 – June 10May 15 – June 15
ChubbuckJune 1 – 15May 20 – June 10
Coeur d'AleneMay 10 – June 1June 1 – July 1
EagleMay 15 – June 10June 1 – July 1
Garden CityJune 1 – 15May 15 – June 15
HaydenMay 10 – June 1June 1 – July 1
Idaho FallsMay 20 – June 15May 20 – June 10
JeromeMay 15 – June 10May 15 – June 15
KunaMay 10 – June 1June 1 – July 1
LewistonMay 1 – June 1June 1 – July 1
MeridianMay 10 – June 1June 1 – July 1
MiddletonMay 15 – June 10May 15 – June 15
MoscowMay 15 – June 10May 20 – June 10
Mountain HomeMay 15 – June 10May 15 – June 15
NampaMay 15 – June 10May 15 – June 15
PocatelloMay 15 – June 10May 15 – June 15
Post FallsMay 10 – June 1June 1 – July 1
RathdrumMay 10 – June 1June 1 – July 1
RexburgMay 20 – June 15Not listed
SandpointMay 20 – June 15May 20 – June 10
StarMay 15 – June 10May 15 – June 15
Twin FallsMay 15 – June 10May 15 – June 15

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for eggplant.