When to plant Lettuce in Nebraska

In spring, from Mar 20 – May 15 in Beatrice to Apr 15 – June 15 in Scottsbluff.

In fall, from June 1 – Aug 1 in Norfolk to July 15 – Sept 1 in South Sioux City.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Leaf lettuce planting dates by place in Nebraska
PlaceSpringFall
BeatriceMar 20 – May 15July 15 – Sept 1
BellevueMar 20 – May 15July 15 – Sept 1
ColumbusMar 20 – May 15July 15 – Sept 1
FremontMar 20 – May 15July 15 – Sept 1
Grand IslandMar 20 – May 15July 15 – Sept 1
HastingsMar 20 – May 15July 15 – Sept 1
KearneyApr 1 – June 1July 15 – Sept 1
La VistaMar 20 – May 15July 15 – Sept 1
LexingtonApr 1 – June 1July 15 – Sept 1
LincolnMar 20 – May 15July 15 – Sept 1
NorfolkApr 1 – June 1June 1 – Aug 1
North PlatteApr 15 – June 15June 1 – Aug 1
OmahaMar 20 – May 15July 15 – Sept 1
PapillionMar 20 – May 15July 15 – Sept 1
ScottsbluffApr 15 – June 15June 1 – Aug 1
South Sioux CityApr 1 – June 1July 15 – Sept 1

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 leaf lettuce.