Growing Calendar

MenuClose

Cary, North Carolina planting calendar and frost dates

Cary is in USDA hardiness zone 8a. The last spring frost typically comes around March 31 and the first fall frost around November 4, giving about 219 frost-free days a year.

Hardiness zone
Zone 8a
Typical last frost
March 31
Typical first frost
November 4
Frost-free season
219 days

Frost dates in Cary

Last spring frost

  • March 15Risky: frost later than this in 9 years out of 10
  • March 31Typical: a later frost in half of years
  • April 16Safe: a later frost only 1 year in 10

First fall frost

  • October 23Risky: frost earlier than this 1 year in 10
  • November 4Typical: an earlier frost in half of years
  • November 17Late: frost before this in 9 years out of 10

The growing season between the typical last and first frosts is about 219 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 March 18 and returns around November 16.

NOAA U.S. Climate Normals 1991-2020 for Raleigh Durham International Airport, 9.6 miles SE of the city center. Low-lying and rural spots often frost later in spring and earlier in fall than airports and city centers. Cary shares this station with Durham, so the two cities have the same frost dates and planting calendar.

What to plant each month in Cary

  1. January

    Start indoors: broccoli, cabbages, cauliflower, collard greens, kale, leeks, onions, oregano, parsley, peppers, petunias, ranunculus, rosemary, snapdragons

  2. February

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

    Plant or sow outdoors: black-eyed susans, blueberries, garlic, grapes, grass seed, hollyhocks, kale, onions, peas, poppies, raspberries, rhubarb, strawberries, turnips, wildflowers

  3. March

    Start indoors: basil, cantaloupes, cilantro, cosmos, cucumbers, marigolds, nasturtiums, okra, pumpkins, ranunculus, tomatoes, watermelons, winter squash, zucchini

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

  4. April

    Start indoors: cosmos, okra, zinnias

    Plant or sow outdoors: asparagus, basil, cantaloupes, chives, cilantro, cucumbers, dahlias, dill, eggplants, garden mums, ginger, gladioli, grapes, green beans, green onions, kentucky bluegrass, lavenders, lettuce, lilies, marigolds, mints, nasturtiums, oregano, parsley, peppers, perennial ryegrass, petunias, pumpkins, ranunculus, rosemary, sage, spinach, sunflowers, sweet corn, sweet peas, swiss chard, tall fescue, thyme, tomatoes, watermelons, winter squash, zucchini

  5. May

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

  6. June

    Plant or sow outdoors: bermudagrass, centipedegrass, st. augustinegrass, zinnias, zoysiagrass

  7. July

    Plant for fall: brussels sprouts, peppers, potatoes, sweet corn, tomatoes

  8. August

    Plant for fall: bearded irises, beets, broccoli, brussels sprouts, cabbages, carrots, cauliflower, collard greens, cucumbers, green beans, lettuce, peas, peppers, radishes, snapdragons, spinach, sweet corn, swiss chard, turnips, zucchini

  9. September

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

  10. October

    Plant for fall: crocuses, daffodils, daylilies, grass seed, hostas, hyacinths, kale, kentucky bluegrass, lilies, ornamental alliums, peonies, perennial ryegrass, radishes, saffron, tall fescue, tulips

  11. November

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

  12. December

    Start indoors: onions

Frost dates and zones by ZIP code in Cary

All 6 of Cary's main ZIP codes take their frost dates from Raleigh Durham International Airport, so the dates on this page apply across the city. Every one of them is in zone 8a.

ZIP codeZoneWeather stationTypical last frostTypical first frost
275118aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4
275138aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4
275188aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4
275198aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4
275398aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4
275608aRaleigh Durham International Airport, 9.6 mi SEMar 31Nov 4

Raleigh Durham International Airport also supplies the frost dates for Durham, so their planting calendars match Cary's.

Planting dates for popular crops in Cary

PlantStart indoorsPlant or sow outdoorsFall planting
TomatoesFeb 16 to Mar 2Apr 13 to 27Jul 22 to 29
Strawberries—Feb 17 to Mar 3—
LettuceFeb 3 to 17Mar 24 to Apr 7Aug 5 to Sep 9
CilantroFeb 17 to Mar 3Mar 31 to Apr 7—
BasilFeb 23 to Mar 9Apr 13 to 20—
Potatoes—Mar 10 to 17Jul 15 to 22
Garlic—Feb 17 to Mar 3Nov 4 to 18
OnionsDec 9 to Jan 20Mar 3 to 17—
CucumbersMar 16 to 30Apr 13 to 27Aug 5 to 19
PumpkinsMar 17 to 31Apr 14 to 28—
PeppersJan 26 to Feb 23Apr 13 to 27Jul 15 to Aug 12
Carrots—Mar 10 to 31Aug 12 to Sep 2
Sweet Potatoes—May 1 to 8—
WatermelonsMar 9 to 23Apr 13 to 27—
Sweet Corn—Mar 31 to Apr 14Jul 29 to Aug 12
Green Beans—Apr 13 to 27Aug 12 to 19
ZucchiniMar 16 to 30Apr 13 to 27Aug 12 to 26
BroccoliJan 13 to Feb 3Mar 3 to 17Aug 19 to Sep 16
Peas—Feb 17 to Mar 3Aug 12 to 26
SpinachFeb 17 to 24Mar 24 to Apr 7Aug 26 to Sep 30
Sunflowers—Mar 31 to Apr 21—
ZinniasApr 23 to 30May 21 to Jun 4—
Tulips——Sep 23 to Nov 18
Daffodils——Sep 23 to Nov 4
Grass Seed—Feb 17 to Mar 3Sep 23 to Oct 7

Nearby cities

Planting in North CarolinaAbout zone 8aPrintable calendar for Cary

Questions

When is the last frost in Cary?

Around March 31 in a typical year, based on NOAA's 1991-2020 records for Raleigh Durham International Airport. There is still a 1 in 10 chance of frost after April 16.

What planting zone is Cary in?

USDA hardiness zone 8a (2023 map). The zone tells you which perennials survive the winter; planting dates depend on frost dates instead.

When should I plant tomatoes in Cary?

Start seeds indoors February 16 to March 2 and set plants out April 13 to 27; the safest date to plant out is after April 16.

When is the first frost in Cary?

Around November 4 in a typical year, and before October 23 about 1 year in 10.