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
January
Start indoors: broccoli, cabbages, cauliflower, collard greens, kale, leeks, onions, oregano, parsley, peppers, petunias, ranunculus, rosemary, snapdragons
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
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
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
May
Plant or sow outdoors: bermudagrass, celery, centipedegrass, cosmos, green onions, okra, peanuts, st. augustinegrass, sweet potatoes, zinnias, zoysiagrass
June
Plant or sow outdoors: bermudagrass, centipedegrass, st. augustinegrass, zinnias, zoysiagrass
July
Plant for fall: brussels sprouts, peppers, potatoes, sweet corn, tomatoes
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
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
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
November
Plant for fall: crocuses, daffodils, garlic, hyacinths, lilies, ornamental alliums, peonies, tulips
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 code | Zone | Weather station | Typical last frost | Typical first frost |
|---|---|---|---|---|
| 27511 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 4 |
| 27513 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 4 |
| 27518 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 4 |
| 27519 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 4 |
| 27539 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 4 |
| 27560 | 8a | Raleigh Durham International Airport, 9.6 mi SE | Mar 31 | Nov 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
| Plant | Start indoors | Plant or sow outdoors | Fall planting |
|---|---|---|---|
| Tomatoes | Feb 16 to Mar 2 | Apr 13 to 27 | Jul 22 to 29 |
| Strawberries | — | Feb 17 to Mar 3 | — |
| Lettuce | Feb 3 to 17 | Mar 24 to Apr 7 | Aug 5 to Sep 9 |
| Cilantro | Feb 17 to Mar 3 | Mar 31 to Apr 7 | — |
| Basil | Feb 23 to Mar 9 | Apr 13 to 20 | — |
| Potatoes | — | Mar 10 to 17 | Jul 15 to 22 |
| Garlic | — | Feb 17 to Mar 3 | Nov 4 to 18 |
| Onions | Dec 9 to Jan 20 | Mar 3 to 17 | — |
| Cucumbers | Mar 16 to 30 | Apr 13 to 27 | Aug 5 to 19 |
| Pumpkins | Mar 17 to 31 | Apr 14 to 28 | — |
| Peppers | Jan 26 to Feb 23 | Apr 13 to 27 | Jul 15 to Aug 12 |
| Carrots | — | Mar 10 to 31 | Aug 12 to Sep 2 |
| Sweet Potatoes | — | May 1 to 8 | — |
| Watermelons | Mar 9 to 23 | Apr 13 to 27 | — |
| Sweet Corn | — | Mar 31 to Apr 14 | Jul 29 to Aug 12 |
| Green Beans | — | Apr 13 to 27 | Aug 12 to 19 |
| Zucchini | Mar 16 to 30 | Apr 13 to 27 | Aug 12 to 26 |
| Broccoli | Jan 13 to Feb 3 | Mar 3 to 17 | Aug 19 to Sep 16 |
| Peas | — | Feb 17 to Mar 3 | Aug 12 to 26 |
| Spinach | Feb 17 to 24 | Mar 24 to Apr 7 | Aug 26 to Sep 30 |
| Sunflowers | — | Mar 31 to Apr 21 | — |
| Zinnias | Apr 23 to 30 | May 21 to Jun 4 | — |
| Tulips | — | — | Sep 23 to Nov 18 |
| Daffodils | — | — | Sep 23 to Nov 4 |
| Grass Seed | — | Feb 17 to Mar 3 | Sep 23 to Oct 7 |
Nearby cities
- Apex, NC zone 8a, last frost Mar 27
- Holly Springs, NC zone 8a, last frost Mar 27
- Raleigh, NC zone 8a, last frost Mar 28
- Durham, NC zone 8a, last frost Mar 31
- Chapel Hill, NC zone 8a, last frost Mar 31
- Wake Forest, NC zone 8a, last frost Mar 28
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.