City	Sow outdoors	Last frost
Houston	Jan 19 to Feb 16	Feb 2
San Antonio	Feb 11 to Mar 11	Feb 25
Dallas	Feb 16 to Mar 16	Mar 2
Fort Worth	Feb 19 to Mar 19	Mar 5
Austin	Feb 6 to Mar 6	Feb 20
El Paso	Feb 16 to Mar 16	Mar 2
Arlington	Feb 23 to Mar 23	Mar 9
Corpus Christi	Jan 8 to Feb 5	Jan 22
Plano	Feb 21 to Mar 21	Mar 7
Lubbock	Mar 10 to Apr 7	Mar 24
Laredo	Jan 11 to Feb 8	Jan 25
Irving	Feb 22 to Mar 22	Mar 8
Garland	Feb 21 to Mar 21	Mar 7
Frisco	Feb 21 to Mar 21	Mar 7
McKinney	Mar 3 to Mar 31	Mar 17
Grand Prairie	Mar 6 to Apr 3	Mar 20
Amarillo	Apr 1 to Apr 29	Apr 15
Brownsville	Dec 26 to Jan 23	Jan 9
Denton	Feb 27 to Mar 27	Mar 13
Killeen	Feb 28 to Mar 28	Mar 14
Mesquite	Feb 26 to Mar 26	Mar 12
McAllen	Dec 26 to Jan 23	Jan 9
Pasadena	Jan 16 to Feb 13	Jan 30
Waco	Feb 23 to Mar 23	Mar 9
Midland	Mar 12 to Apr 9	Mar 26
Round Rock	Feb 25 to Mar 25	Mar 11
Lewisville	Feb 28 to Mar 28	Mar 14
Carrollton	Feb 21 to Mar 21	Mar 7
Abilene	Mar 6 to Apr 3	Mar 20
Pearland	Jan 17 to Feb 14	Jan 31
College Station	Feb 13 to Mar 13	Feb 27
Odessa	Mar 1 to Mar 29	Mar 15
New Braunfels	Feb 22 to Mar 22	Mar 8
League City	Jan 17 to Feb 14	Jan 31
Conroe	Feb 10 to Mar 10	Feb 24
Richardson	Feb 21 to Mar 21	Mar 7
The Woodlands	Feb 5 to Mar 5	Feb 19
Tyler	Feb 21 to Mar 21	Mar 7
Allen	Mar 4 to Apr 1	Mar 18
Beaumont	Jan 31 to Feb 28	Feb 14
Edinburg	Dec 25 to Jan 22	Jan 8
Sugar Land	Jan 26 to Feb 23	Feb 9
Georgetown	Feb 20 to Mar 20	Mar 6
Wichita Falls	Mar 12 to Apr 9	Mar 26
San Angelo	Mar 6 to Apr 3	Mar 20
Temple	Feb 28 to Mar 28	Mar 14
Atascocita	Jan 30 to Feb 27	Feb 13
Bryan	Feb 13 to Mar 13	Feb 27
Leander	Feb 20 to Mar 20	Mar 6
Mission	Dec 26 to Jan 23	Jan 9
Baytown	Feb 6 to Mar 6	Feb 20
Mansfield	Feb 23 to Mar 23	Mar 9
Longview	Feb 21 to Mar 21	Mar 7
Pharr	Dec 26 to Jan 23	Jan 9
Flower Mound	Feb 28 to Mar 28	Mar 14
Cedar Park	Feb 25 to Mar 25	Mar 11
San Marcos	Feb 14 to Mar 14	Feb 28
Missouri City	Feb 1 to Mar 1	Feb 15
Harlingen	Dec 26 to Jan 23	Jan 9
North Richland Hills	Feb 24 to Mar 24	Mar 10
Kyle	Feb 14 to Mar 14	Feb 28
Pflugerville	Feb 25 to Mar 25	Mar 11
Rowlett	Feb 24 to Mar 24	Mar 10
Spring	Jan 30 to Feb 27	Feb 13
Victoria	Jan 31 to Feb 28	Feb 14
Fulshear	Jan 26 to Feb 23	Feb 9
Celina	Mar 10 to Apr 7	Mar 24
Wylie	Feb 24 to Mar 24	Mar 10
Little Elm	Feb 27 to Mar 27	Mar 13
Euless	Feb 22 to Mar 22	Mar 8
Texas City	Jan 11 to Feb 8	Jan 25
Burleson	Mar 7 to Apr 4	Mar 21
DeSoto	Feb 20 to Mar 20	Mar 6
Port Arthur	Jan 31 to Feb 28	Feb 14
Rockwall	Feb 24 to Mar 24	Mar 10
Galveston	Jan 4 to Feb 1	Jan 18
Sherman	Feb 28 to Mar 28	Mar 14
Grapevine	Feb 28 to Mar 28	Mar 14
Waxahachie	Mar 2 to Mar 30	Mar 16
Cedar Hill	Mar 6 to Apr 3	Mar 20
Huntsville	Feb 15 to Mar 15	Mar 1
Bedford	Feb 23 to Mar 23	Mar 9
Midlothian	Mar 2 to Mar 30	Mar 16
The Colony	Feb 21 to Mar 21	Mar 7
Keller	Feb 26 to Mar 26	Mar 12
Hutto	Feb 22 to Mar 22	Mar 8
Schertz	Feb 7 to Mar 7	Feb 21
Prosper	Mar 3 to Mar 31	Mar 17
Haltom City	Feb 24 to Mar 24	Mar 10
Weslaco	Dec 25 to Jan 22	Jan 8
Channelview	Jan 19 to Feb 16	Feb 2
Princeton	Mar 4 to Apr 1	Mar 18
Rosenberg	Jan 26 to Feb 23	Feb 9
Forney	Feb 25 to Mar 25	Mar 11
Coppell	Feb 28 to Mar 28	Mar 14
Friendswood	Jan 17 to Feb 14	Jan 31
Seguin	Feb 15 to Mar 15	Mar 1
Weatherford	Mar 11 to Apr 8	Mar 25
Lancaster	Feb 26 to Mar 26	Mar 12
Copperas Cove	Feb 28 to Mar 28	Mar 14
Cleburne	Mar 3 to Mar 31	Mar 17
Cibolo	Feb 7 to Mar 7	Feb 21
Hurst	Feb 24 to Mar 24	Mar 10
Duncanville	Mar 6 to Apr 3	Mar 20
Socorro	Feb 16 to Mar 16	Mar 2
Farmers Branch	Feb 16 to Mar 16	Mar 2
La Porte	Jan 17 to Feb 14	Jan 31
San Juan	Dec 26 to Jan 23	Jan 9
Mission Bend	Jan 19 to Feb 16	Feb 2
Greenville	Mar 4 to Apr 1	Mar 18
Texarkana	Mar 1 to Mar 29	Mar 15
Anna	Mar 3 to Mar 31	Mar 17
Harker Heights	Feb 28 to Mar 28	Mar 14
Timberwood Park	Feb 12 to Mar 12	Feb 26
Del Rio	Feb 2 to Mar 2	Feb 16
Lufkin	Feb 25 to Mar 25	Mar 11
Deer Park	Jan 19 to Feb 16	Feb 2
Canyon Lake	Feb 15 to Mar 15	Mar 1
Sachse	Feb 24 to Mar 24	Mar 10
Nacogdoches	Feb 27 to Mar 27	Mar 13
Converse	Feb 7 to Mar 7	Feb 21
West Odessa	Mar 1 to Mar 29	Mar 15
Southlake	Feb 28 to Mar 28	Mar 14
Alvin	Jan 31 to Feb 28	Feb 14
Melissa	Mar 3 to Mar 31	Mar 17
Fate	Feb 24 to Mar 24	Mar 10
Eagle Pass	Feb 5 to Mar 5	Feb 19
Katy	Jan 19 to Feb 16	Feb 2
Royse City	Feb 24 to Mar 24	Mar 10
Lake Jackson	Jan 30 to Feb 27	Feb 13
Balch Springs	Feb 26 to Mar 26	Mar 12
Denison	Feb 28 to Mar 28	Mar 14
Saginaw	Feb 25 to Mar 25	Mar 11
Belton	Feb 28 to Mar 28	Mar 14
Colleyville	Feb 28 to Mar 28	Mar 14
Ennis	Feb 22 to Mar 22	Mar 8
Kerrville	Mar 13 to Apr 10	Mar 27
Corsicana	Feb 28 to Mar 28	Mar 14
University Park	Feb 16 to Mar 16	Mar 2
Corinth	Feb 27 to Mar 27	Mar 13
Paris	Feb 28 to Mar 28	Mar 14
Horizon City	Feb 16 to Mar 16	Mar 2
Sienna	Feb 1 to Mar 1	Feb 15
San Benito	Dec 26 to Jan 23	Jan 9
Pecan Grove	Jan 26 to Feb 23	Feb 9
Kingsville	Jan 11 to Feb 8	Jan 25
Cloverleaf	Jan 19 to Feb 16	Feb 2
Marshall	Mar 6 to Apr 3	Mar 20
Benbrook	Feb 28 to Mar 28	Mar 14
Alton	Jan 9 to Feb 6	Jan 23
Fresno	Feb 1 to Mar 1	Feb 15
Boerne	Mar 1 to Mar 29	Mar 15
Terrell	Feb 25 to Mar 25	Mar 11
Manor	Feb 18 to Mar 18	Mar 4
Watauga	Feb 24 to Mar 24	Mar 10
Big Spring	Mar 6 to Apr 3	Mar 20
Dickinson	Jan 17 to Feb 14	Jan 31
Stephenville	Mar 15 to Apr 12	Mar 29
Angleton	Jan 15 to Feb 12	Jan 29
Seagoville	Feb 26 to Mar 26	Mar 12
Murphy	Feb 24 to Mar 24	Mar 10
Crowley	Mar 7 to Apr 4	Mar 21
Brushy Creek	Feb 25 to Mar 25	Mar 11
Portland	Jan 17 to Feb 14	Jan 31
Manvel	Jan 17 to Feb 14	Jan 31
Alamo	Dec 26 to Jan 23	Jan 9
Iowa Colony	Jan 17 to Feb 14	Jan 31
Universal City	Feb 7 to Mar 7	Feb 21
Red Oak	Mar 2 to Mar 30	Mar 16
Glenn Heights	Mar 2 to Mar 30	Mar 16
La Marque	Jan 17 to Feb 14	Jan 31

Questions

When should I plant swiss chard in Texas?

In Houston, sow outdoors from January 19 to February 16. Across Texas the window opens between December 25 and April 1, depending on the local last frost.

How is this date worked out?

Sow outdoors from 2 weeks before to 2 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.