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Round Rock, TX Planting Calendar

The last spring frost in Round Rock usually comes around Feb 20 and the first fall frost around Dec 6, a growing season of about 289 days. Start tomatoes indoors Jan 9 – Jan 23 and plant them outside Mar 6 – Mar 20.

Last spring frostFeb 20
First fall frostDec 6
Growing season289 days

When to plant vegetables in Round Rock

VegetableStart seeds indoorsPlant outsideFall crop
TomatoesJan 9 – Jan 23Mar 6 – Mar 20—
PeppersJan 2 – Jan 16Mar 13 – Mar 27—
EggplantJan 2 – Jan 16Mar 13 – Mar 27—
Cucumbers—Mar 6 – Mar 20—
Zucchini & summer squash—Mar 6 – Mar 20—
Pumpkins & winter squash—Mar 13 – Mar 27—
Green beans—Mar 6 – Mar 20Sep 13 – Sep 27
Sweet corn—Mar 6 – Mar 20—
BasilJan 23 – Feb 6Mar 6 – Mar 20—
LettuceDec 26 – Jan 9Jan 23 – Mar 6Oct 11 – Oct 25
Spinach—Jan 9 – Jan 30Oct 11 – Oct 25
Peas—Jan 9 – Jan 30Sep 27 – Oct 11
Carrots—Jan 23 – Feb 27Sep 13 – Sep 27
Radishes—Jan 16 – Mar 6Oct 25 – Nov 8
BroccoliDec 12 – Dec 26Jan 23 – Feb 6Sep 13 – Sep 27
KaleDec 26 – Jan 9Jan 16 – Jan 30Sep 27 – Oct 11
Onions—Jan 23 – Feb 6—
Potatoes—Jan 30 – Feb 27—
Garlic——Nov 22 – Dec 27

Dates count from the median frost dates (2016–2025) for Round Rock. In a cold spring, wait a week; in a warm one you can go a week early.

Month-by-month planting in Round Rock

  1. JanuaryStart indoors: Tomatoes, Peppers, Eggplant, Basil, Lettuce, KalePlant outside: Lettuce, Spinach, Peas, Carrots, Radishes, Broccoli, Kale, Onions, Potatoes
  2. FebruaryStart indoors: BasilPlant outside: Lettuce, Carrots, Radishes, Broccoli, Onions, Potatoes
  3. MarchPlant outside: Tomatoes, Peppers, Eggplant, Cucumbers, Zucchini & summer squash, Pumpkins & winter squash, Green beans, Sweet corn, Basil, Lettuce, Radishes
  4. AprilPlan, order seeds and prepare beds.
  5. MayPlan, order seeds and prepare beds.
  6. JunePlan, order seeds and prepare beds.
  7. JulyPlan, order seeds and prepare beds.
  8. AugustPlan, order seeds and prepare beds.
  9. SeptemberPlant outside: Green beans, Peas, Carrots, Broccoli, Kale
  10. OctoberPlant outside: Lettuce, Spinach, Peas, Radishes, Kale
  11. NovemberPlant outside: Radishes, Garlic
  12. DecemberStart indoors: Lettuce, Broccoli, KalePlant outside: Garlic

Tools for this season

Seed starting kitTrays with humidity domes for starting seeds indoors.See options on AmazonLED grow lightKeeps indoor seedlings short and sturdy.See options on AmazonFrost clothCovers tender plants on a surprise frost night.See options on AmazonSoil thermometerCheck the soil at 4 inches before you spread anything.See options on Amazon

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Frequently asked questions

When is the last frost in Round Rock?

The median last spring frost is Feb 20 and the median first fall frost is Dec 6, based on 2016–2025 weather data.

When should I plant tomatoes in Round Rock?

Start seeds indoors Jan 9 – Jan 23 and set plants outside Mar 6 – Mar 20, once nights stay above 50°F.

When should I plant a fall garden in Round Rock?

Sow or transplant cool-season crops 6 to 12 weeks before the first fall frost (around Dec 6): broccoli and carrots first, lettuce, spinach and radishes last.

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