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Columbus, Ohio planting calendar and frost dates

Columbus is in USDA hardiness zone 6b. The last spring frost typically comes around April 18 and the first fall frost around October 27, giving about 191 frost-free days a year.

Hardiness zone
Zone 6b (parts in 6a)
Typical last frost
April 18
Typical first frost
October 27
Frost-free season
191 days

Frost dates in Columbus

Last spring frost

  • April 4Risky: frost later than this in 9 years out of 10
  • April 18Typical: a later frost in half of years
  • May 5Safe: a later frost only 1 year in 10

First fall frost

  • October 14Risky: frost earlier than this 1 year in 10
  • October 27Typical: an earlier frost in half of years
  • November 7Late: frost before this in 9 years out of 10

The growing season between the typical last and first frosts is about 191 days. Frost here means a low of 32°F at the weather station. A hard freeze (28°F), which damages most hardy crops too, typically ends around April 5 and returns around November 6.

NOAA U.S. Climate Normals 1991-2020 for Columbus Port Columbus International Airport, 6.6 miles ENE of the city center. Low-lying and rural spots often frost later in spring and earlier in fall than airports and city centers.

What to plant each month in Columbus

  1. January

    Start indoors: broccoli, cauliflower, collard greens, kale, leeks, onions, petunias, ranunculus

  2. February

    Start indoors: black-eyed susans, broccoli, cabbages, cauliflower, celery, chives, collard greens, ginger, kale, leeks, lettuce, marigolds, onions, oregano, parsley, peppers, petunias, ranunculus, rosemary, sage, snapdragons

  3. March

    Start indoors: basil, black-eyed susans, cabbages, celery, chives, cilantro, collard greens, eggplants, ginger, lettuce, marigolds, nasturtiums, peppers, ranunculus, sage, snapdragons, spinach, swiss chard, tomatoes

    Plant or sow outdoors: beets, black-eyed susans, blackberries, blueberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, collard greens, figs, garlic, gladioli, grapes, grass seed, hollyhocks, kale, leeks, lettuce, onions, parsley, peas, poppies, radishes, ranunculus, raspberries, rhubarb, roses, spinach, strawberries, swiss chard, turnips, wildflowers

  4. April

    Start indoors: basil, cantaloupes, cosmos, cucumbers, okra, pumpkins, ranunculus, watermelons, winter squash, zucchini

    Plant or sow outdoors: asparagus, beets, black-eyed susans, blackberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, dahlias, dill, figs, garden mums, ginger, gladioli, grapes, green onions, kentucky bluegrass, lavenders, leeks, lettuce, lilies, marigolds, mints, nasturtiums, onions, oregano, parsley, perennial ryegrass, petunias, potatoes, radishes, ranunculus, rosemary, roses, sage, snapdragons, spinach, sunflowers, sweet corn, sweet peas, swiss chard, tall fescue, thyme, turnips

  5. May

    Start indoors: zinnias

    Plant or sow outdoors: asparagus, basil, bermudagrass, cantaloupes, celery, centipedegrass, cosmos, cucumbers, eggplants, garden mums, ginger, grapes, green beans, green onions, kentucky bluegrass, lavenders, lilies, marigolds, mints, nasturtiums, okra, oregano, parsley, peanuts, peppers, perennial ryegrass, petunias, pumpkins, rosemary, sage, st. augustinegrass, sunflowers, sweet corn, sweet peas, sweet potatoes, tall fescue, thyme, tomatoes, watermelons, winter squash, zoysiagrass, zucchini

  6. June

    Plant or sow outdoors: bermudagrass, celery, centipedegrass, cosmos, green onions, okra, peanuts, st. augustinegrass, zinnias, zoysiagrass

  7. July

    Plant for fall: brussels sprouts, collard greens, lettuce, swiss chard

  8. August

    Plant for fall: bearded irises, beets, broccoli, cabbages, carrots, cauliflower, collard greens, daylilies, kale, lettuce, peas, radishes, snapdragons, spinach, swiss chard, turnips

  9. September

    Plant for fall: azaleas, bearded irises, beets, broccoli, cabbages, cauliflower, clematis, coneflowers, crocuses, daffodils, daylilies, grass seed, hostas, hyacinths, hydrangeas, kale, kentucky bluegrass, lettuce, lilies, ornamental alliums, peonies, perennial ryegrass, radishes, roses, saffron, snapdragons, spinach, tall fescue, tulips, turnips

  10. October

    Plant for fall: crocuses, daffodils, daylilies, garlic, hyacinths, lilies, ornamental alliums, peonies, tulips

  11. November

    Plant for fall: crocuses, garlic, hyacinths, ornamental alliums, tulips

  12. December

    Start indoors: onions

Frost dates and zones by ZIP code in Columbus

All 10 of Columbus's main ZIP codes take their frost dates from Columbus Port Columbus International Airport, so the dates on this page apply across the city. Every one of them is in zone 6b.

ZIP codeZoneWeather stationTypical last frostTypical first frost
431106bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
431376bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432046bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432076bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432196bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432246bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432286bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432296bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432326bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27
432356bColumbus Port Columbus International Airport, 6.6 mi ENEApr 18Oct 27

Planting dates for popular crops in Columbus

PlantStart indoorsPlant or sow outdoorsFall planting
TomatoesMar 11 to 25May 6 to 20—
Strawberries—Mar 7 to 21—
LettuceFeb 21 to Mar 7Apr 11 to 25Jul 28 to Sep 1
CilantroMar 7 to 21Apr 18 to 25—
BasilMar 18 to Apr 1May 6 to 13—
Potatoes—Apr 8 to 15—
Garlic—Mar 7 to 21Oct 27 to Nov 10
OnionsDec 27 to Feb 7Mar 21 to Apr 4—
CucumbersApr 8 to 22May 6 to 20—
PumpkinsApr 8 to 22May 6 to 20—
PeppersFeb 18 to Mar 18May 6 to 20—
Carrots—Mar 28 to Apr 18Aug 4 to 25
Sweet Potatoes—May 22 to 29—
WatermelonsApr 1 to 15May 6 to 20—
Sweet Corn—Apr 18 to May 2—
Green Beans—May 6 to 20—
ZucchiniApr 8 to 22May 6 to 20—
BroccoliJan 31 to Feb 21Mar 21 to Apr 4Aug 11 to Sep 8
Peas—Mar 7 to 21Aug 4 to 18
SpinachMar 7 to 14Apr 11 to 25Aug 18 to Sep 22
Sunflowers—Apr 18 to May 9—
ZinniasMay 11 to 18Jun 8 to 22—
Tulips——Sep 15 to Nov 10
Daffodils——Sep 15 to Oct 27
Grass Seed—Mar 7 to 21Sep 15 to 29

Nearby cities

Planting in OhioAbout zone 6bPrintable calendar for Columbus

Questions

When is the last frost in Columbus?

Around April 18 in a typical year, based on NOAA's 1991-2020 records for Columbus Port Columbus International Airport. There is still a 1 in 10 chance of frost after May 5.

What planting zone is Columbus in?

USDA hardiness zone 6b (2023 map), with parts of the city in zone 6a. The zone tells you which perennials survive the winter; planting dates depend on frost dates instead.

When should I plant tomatoes in Columbus?

Start seeds indoors March 11 to 25 and set plants out May 6 to 20.

When is the first frost in Columbus?

Around October 27 in a typical year, and before October 14 about 1 year in 10.