When to plant Onions in Louisiana

In spring, from Jan 1 – 15 in Abbeville to Feb 10 – Mar 10 in Minden.

In fall, from Sept 1 – Oct 15 in Minden to Oct 1 – Dec 31 in Zachary.

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.

Onion plants planting dates by place in Louisiana
PlaceSpringFall
AbbevilleJan 1 – 15Oct 1 – Dec 31Now
AlexandriaJan 1 – Feb 1Oct 1 – Dec 31Now
BakerJan 1 – Feb 1Oct 1 – Dec 31Now
Baton RougeJan 1 – Feb 1Oct 1 – Dec 31Now
BogalusaJan 1 – Feb 1Oct 1 – Dec 31Now
Bossier CityJan 1 – Feb 1Oct 1 – Dec 31Now
BroussardJan 1 – 15Oct 1 – Dec 31Now
CarencroJan 1 – Feb 1Oct 1 – Dec 31Now
CentralJan 1 – Feb 1Oct 1 – Dec 31Now
CovingtonJan 15 – Feb 15Oct 1 – Dec 31Now
CrowleyJan 1 – 15Oct 1 – Dec 31Now
GonzalesJan 1 – 15Oct 1 – Dec 31Now
GretnaJan 1 – 15Oct 1 – Dec 31Now
HammondJan 15 – Feb 15Oct 1 – Dec 31Now
HoumaJan 1 – 15Oct 1 – Dec 31Now
KennerJan 1 – 15Oct 1 – Dec 31Now
LafayetteJan 1 – Feb 1Oct 1 – Dec 31Now
Lake CharlesJan 1 – 15Oct 1 – Dec 31Now
MandevilleJan 15 – Feb 15Oct 1 – Dec 31Now
MindenFeb 10 – Mar 10Sept 1 – Oct 15
MonroeJan 15 – Feb 15Sept 1 – Oct 15
Morgan CityJan 1 – 15Oct 1 – Dec 31Now
NatchitochesJan 1 – Feb 1Oct 1 – Dec 31Now
New IberiaJan 1 – 15Oct 1 – Dec 31Now
New OrleansJan 1 – 15—
OpelousasJan 1 – Feb 1Oct 1 – Dec 31Now
PinevilleJan 1 – Feb 1Oct 1 – Dec 31Now
RustonJan 15 – Feb 15Oct 1 – Dec 31Now
ShreveportJan 15 – Feb 15Oct 1 – Dec 31Now
SlidellJan 1 – Feb 1Oct 1 – Dec 31Now
SulphurJan 1 – 15Oct 1 – Dec 31Now
ThibodauxJan 1 – 15Oct 1 – Dec 31Now
West MonroeJan 15 – Feb 15Sept 1 – Oct 15
YoungsvilleJan 1 – 15Oct 1 – Dec 31Now
ZacharyJan 1 – Feb 1Oct 1 – Dec 31Now

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 onion plants.