Frost dates · USDA zone 8b
Frost dates for Rockwall, TX
Rockwall, TX sees its last 32 °F night of spring around March 10 and its first of fall around November 19 — a 254-day freeze-free season in a typical year.
Pick a sauce; the Plan Builder runs this station's dates and hands back the calendar, plant count and gear list.
Freeze odds, by date
| Odds | Last spring freeze after | First fall freeze before |
|---|---|---|
| 9 years in 10 | Feb 20 | Dec 5 |
| Median — 1 year in 2 | Mar 10 | Nov 19 |
| 1 year in 10 | Mar 31 | Nov 1 |
The top row is the risky edge: in 9 years of 10 a spring freeze still comes after it, so tender transplants set out then need cover. The bottom row is the cautious date — only 1 year in 10 freezes after it — and the one to plan uncovered tender transplants against. Freeze-free season: 254 days median, at least 227 in 9 years of 10, at least 278 days in 1 year of 10. NOAA ranks season length year by year, so it is not the gap between two rows above. A hard freeze (28 °F) has a median last date of Feb 26 and first of Dec 1.
Rockwall planting calendar, 2027
Every row runs from the median last frost (Mar 10) and median first frost (Nov 19) above, using each cultivar's days to maturity. Same engine as the Plan Builder.
| Crop | Start indoors | Transplant / plant | First harvest | Days |
|---|---|---|---|---|
| Hardneck GarlicSiberian (porcelain hardneck) | — | Oct 15prior fall | Jun 12 | 240 from sow |
| Spanish OnionYellow Sweet Spanish (long-day) | Dec 16 | Feb 10 | May 31 | 110 from transplant |
| Mustard greensGarnet Giant (Brassica juncea) | Direct sow | Mar 10 | Apr 9 | 30 from sow |
| CilantroSlow Bolt (Coriandrum sativum) | Feb 24 | Feb 24 | Apr 10 | 45 from sow |
| Genovese BasilGenovese | Feb 10 | Mar 24 | May 23 | 60 from transplant |
| CayenneLong Slim Cayenne (Capsicum annuum) | Jan 13 | Mar 17 | May 31 | 75 from transplant |
| HabaneroOrange Habanero (Capsicum chinense) | Dec 30 | Mar 24 | Jun 27 | 95 from transplant |
| JalapeñoEarly Jalapeño (Capsicum annuum) | Jan 13 | Mar 17 | May 31 | 75 from transplant |
| Marconi Red PepperMarconi Red (Capsicum annuum) | Jan 13 | Mar 17 | Jun 5 | 80 from transplant |
| SerranoSerrano Tampiqueño (Capsicum annuum) | Jan 13 | Mar 17 | Jun 5 | 80 from transplant |
| Nantes CarrotScarlet Nantes | Feb 24 | Feb 24 | May 5 | 70 from sow |
| TomatilloToma Verde | Jan 27 | Mar 17 | May 26 | 70 from transplant |
| Roma TomatoRoma VF (determinate paste) | Jan 27 | Mar 17 | May 31 | 75 from transplant |
| San Marzano TomatoSan Marzano (indeterminate paste) | Jan 27 | Mar 17 | Jun 5 | 80 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost: start that crop indoors on time or cover it in fall.
What sauce can Rockwall grow?
Each sauce, scheduled for a Rockwall container garden: when the first seeds go in and when enough fruit has ripened for one batch.
Rockwall frost questions
When is the last frost in Rockwall, TX?
The median last 32 °F freeze at LAVON DAM, TX is March 10: half of years see a later one. One year in ten, a freeze still comes after March 31; nine years in ten, it comes after February 20. Source: NOAA NCEI 1991–2020 U.S. Climate Normals.
When is the first frost in Rockwall, TX?
The median first 32 °F freeze of fall is November 19. One year in ten it arrives before November 1; nine years in ten, before December 5.
How long is the growing season in Rockwall, TX?
254 days between the last spring and first fall 32 °F freeze in a median year. Nine years in ten the season runs at least 227 days; one year in ten, at least 278 days.
What growing zone is Rockwall, TX?
USDA hardiness zone 8b, per the 2023 USDA Plant Hardiness Zone Map for ZIP 75087. A zone describes the coldest winter night, not when frost ends, so it is the wrong number for a planting calendar — the frost dates on this page are the right one.
When should I plant tomatoes in Rockwall, TX?
Start Roma VF (determinate paste) seeds indoors around Jan 27 and transplant around Mar 17, 1 week after the median last frost. To cut the freeze risk to one year in ten, wait for Mar 31. First ripe fruit lands around May 31.
When should I plant peppers in Rockwall, TX?
Sow jalapeño indoors on a heat mat around Jan 13; transplant no earlier than Mar 17, and wait past it until nights hold above 50 °F — that can run weeks later. First green pods around May 31.
Nearby in Texas
- Rowlettlast frost Mar 10
- Wylielast frost Mar 10
- Garlandlast frost Mar 7
- Mesquitelast frost Mar 2
- Richardsonlast frost Mar 7
- Allenlast frost Mar 18
All Texas frost dates → · How frost-date math drives a sowing calendar →