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.
- 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
January
Start indoors: broccoli, cauliflower, collard greens, kale, leeks, onions, petunias, ranunculus
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
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
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
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
June
Plant or sow outdoors: bermudagrass, celery, centipedegrass, cosmos, green onions, okra, peanuts, st. augustinegrass, zinnias, zoysiagrass
July
Plant for fall: brussels sprouts, collard greens, lettuce, swiss chard
August
Plant for fall: bearded irises, beets, broccoli, cabbages, carrots, cauliflower, collard greens, daylilies, kale, lettuce, peas, radishes, snapdragons, spinach, swiss chard, turnips
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
October
Plant for fall: crocuses, daffodils, daylilies, garlic, hyacinths, lilies, ornamental alliums, peonies, tulips
November
Plant for fall: crocuses, garlic, hyacinths, ornamental alliums, tulips
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 code | Zone | Weather station | Typical last frost | Typical first frost |
|---|---|---|---|---|
| 43110 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43137 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43204 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43207 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43219 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43224 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43228 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43229 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43232 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
| 43235 | 6b | Columbus Port Columbus International Airport, 6.6 mi ENE | Apr 18 | Oct 27 |
Planting dates for popular crops in Columbus
| Plant | Start indoors | Plant or sow outdoors | Fall planting |
|---|---|---|---|
| Tomatoes | Mar 11 to 25 | May 6 to 20 | — |
| Strawberries | — | Mar 7 to 21 | — |
| Lettuce | Feb 21 to Mar 7 | Apr 11 to 25 | Jul 28 to Sep 1 |
| Cilantro | Mar 7 to 21 | Apr 18 to 25 | — |
| Basil | Mar 18 to Apr 1 | May 6 to 13 | — |
| Potatoes | — | Apr 8 to 15 | — |
| Garlic | — | Mar 7 to 21 | Oct 27 to Nov 10 |
| Onions | Dec 27 to Feb 7 | Mar 21 to Apr 4 | — |
| Cucumbers | Apr 8 to 22 | May 6 to 20 | — |
| Pumpkins | Apr 8 to 22 | May 6 to 20 | — |
| Peppers | Feb 18 to Mar 18 | May 6 to 20 | — |
| Carrots | — | Mar 28 to Apr 18 | Aug 4 to 25 |
| Sweet Potatoes | — | May 22 to 29 | — |
| Watermelons | Apr 1 to 15 | May 6 to 20 | — |
| Sweet Corn | — | Apr 18 to May 2 | — |
| Green Beans | — | May 6 to 20 | — |
| Zucchini | Apr 8 to 22 | May 6 to 20 | — |
| Broccoli | Jan 31 to Feb 21 | Mar 21 to Apr 4 | Aug 11 to Sep 8 |
| Peas | — | Mar 7 to 21 | Aug 4 to 18 |
| Spinach | Mar 7 to 14 | Apr 11 to 25 | Aug 18 to Sep 22 |
| Sunflowers | — | Apr 18 to May 9 | — |
| Zinnias | May 11 to 18 | Jun 8 to 22 | — |
| Tulips | — | — | Sep 15 to Nov 10 |
| Daffodils | — | — | Sep 15 to Oct 27 |
| Grass Seed | — | Mar 7 to 21 | Sep 15 to 29 |
Nearby cities
- Newark, OH zone 6a, last frost Apr 29
- Springfield, OH zone 6a, last frost Apr 25
- Kettering, OH zone 6b, last frost Apr 18
- Dayton, OH zone 6b, last frost Apr 18
- Middletown, OH zone 6b, last frost Apr 24
- Hamilton, OH zone 6b, last frost Apr 19
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.