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Oklahoma City, OK Planting Calendar

The last spring frost in Oklahoma City usually comes around Mar 31 and the first fall frost around Nov 5, a growing season of about 219 days. Start tomatoes indoors Feb 17 – Mar 3 and plant them outside Apr 14 – Apr 28.

Last spring frostMar 31
First fall frostNov 5
Growing season219 days

When to plant vegetables in Oklahoma City

VegetableStart seeds indoorsPlant outsideFall crop
TomatoesFeb 17 – Mar 3Apr 14 – Apr 28—
PeppersFeb 10 – Feb 24Apr 21 – May 5—
EggplantFeb 10 – Feb 24Apr 21 – May 5—
Cucumbers—Apr 14 – Apr 28—
Zucchini & summer squash—Apr 14 – Apr 28—
Pumpkins & winter squash—Apr 21 – May 5—
Green beans—Apr 14 – Apr 28Aug 13 – Aug 27
Sweet corn—Apr 14 – Apr 28—
BasilMar 3 – Mar 17Apr 14 – Apr 28—
LettuceFeb 3 – Feb 17Mar 3 – Apr 14Sep 10 – Sep 24
Spinach—Feb 17 – Mar 10Sep 10 – Sep 24
Peas—Feb 17 – Mar 10Aug 27 – Sep 10
Carrots—Mar 3 – Apr 7Aug 13 – Aug 27
Radishes—Feb 24 – Apr 14Sep 24 – Oct 8
BroccoliJan 20 – Feb 3Mar 3 – Mar 17Aug 13 – Aug 27
KaleFeb 3 – Feb 17Feb 24 – Mar 10Aug 27 – Sep 10
Onions—Mar 3 – Mar 17—
Potatoes—Mar 10 – Apr 7—
Garlic——Oct 22 – Nov 26

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

Month-by-month planting in Oklahoma City

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

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 Oklahoma City?

The median last spring frost is Mar 31 and the median first fall frost is Nov 5, based on 2016–2025 weather data.

When should I plant tomatoes in Oklahoma City?

Start seeds indoors Feb 17 – Mar 3 and set plants outside Apr 14 – Apr 28, once nights stay above 50°F.

When should I plant a fall garden in Oklahoma City?

Sow or transplant cool-season crops 6 to 12 weeks before the first fall frost (around Nov 5): broccoli and carrots first, lettuce, spinach and radishes last.

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