FrostCal

When to Plant Onions in Texas

In a typical Texas location, start seeds indoors Dec 27 – Jan 10, then transplant outdoors Feb 7 – Feb 21. Across the state, the outdoor planting window starts as early as Dec 11 in Edinburg and as late as Mar 24 in Dumas.

Method Start indoors, then transplant
Days to maturity 90–120 days

Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings.

Onions Planting Dates by City

CityStart indoorsTransplant
HoustonNov 24 – Dec 8Jan 5 – Jan 19
San AntonioDec 17 – Dec 31Jan 28 – Feb 11
DallasDec 22 – Jan 5Feb 2 – Feb 16
Fort WorthDec 25 – Jan 8Feb 5 – Feb 19
AustinDec 30 – Jan 13Feb 10 – Feb 24
El PasoDec 22 – Jan 5Feb 2 – Feb 16
ArlingtonDec 29 – Jan 12Feb 9 – Feb 23
Corpus ChristiNov 22 – Dec 6Jan 3 – Jan 17
PlanoDec 27 – Jan 10Feb 7 – Feb 21
LaredoNov 11 – Nov 25Dec 23 – Jan 6
LubbockJan 13 – Jan 27Feb 24 – Mar 10
GarlandDec 27 – Jan 10Feb 7 – Feb 21
IrvingDec 22 – Jan 5Feb 2 – Feb 16
CypressDec 11 – Dec 25Jan 22 – Feb 5
AmarilloFeb 4 – Feb 18Mar 18 – Apr 1
Grand PrairieDec 29 – Jan 12Feb 9 – Feb 23
BrownsvilleOct 31 – Nov 14Dec 12 – Dec 26
McKinneyJan 6 – Jan 20Feb 17 – Mar 3
FriscoDec 27 – Jan 10Feb 7 – Feb 21
PasadenaNov 24 – Dec 8Jan 5 – Jan 19
MesquiteDec 22 – Jan 5Feb 2 – Feb 16
KilleenJan 3 – Jan 17Feb 14 – Feb 28
McAllenOct 31 – Nov 14Dec 12 – Dec 26
CarrolltonDec 22 – Jan 5Feb 2 – Feb 16
MidlandJan 15 – Jan 29Feb 26 – Mar 12
WacoDec 29 – Jan 12Feb 9 – Feb 23
DentonJan 2 – Jan 16Feb 13 – Feb 27
AbileneJan 9 – Jan 23Feb 20 – Mar 6
Round RockDec 31 – Jan 14Feb 11 – Feb 25
BeaumontDec 6 – Dec 20Jan 17 – Jan 31

Showing the 30 most populous of 258 Texas cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Texas cities.

Frequently Asked Questions

When should I plant onions in Texas?

In a typical Texas location, start seeds indoors Dec 27 – Jan 10, then transplant outdoors Feb 7 – Feb 21. Across the state, the outdoor planting window starts as early as Dec 11 in Edinburg and as late as Mar 24 in Dumas.

When is the last frost in Texas?

The average last spring frost in Texas ranges from January 8 in Edinburg to April 21 in Dumas, based on NOAA 1991–2020 climate normals.

How long do onions take to grow?

Onions typically take 90–120 days from planting to harvest. Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings.

Other Crops in Texas

When to plant onions in other states

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