Concord, California planting calendar and frost dates

Frost dates in Concord

NOAA U.S. Climate Normals 1991-2020 for Concord Buchanan Fld, 1.6 miles NW 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 Concord

1. January

   Start indoors: ginger, peppers

   Plant or sow outdoors: asparagus, avocados, beets, carrots, cauliflower, chives, cilantro, dahlias, dill, figs, garden mums, gladioli, grapes, green onions, lavenders, leeks, lettuce, lilies, marigolds, mints, nasturtiums, oregano, parsley, peppers, petunias, ranunculus, rosemary, roses, sage, snapdragons, spinach, sunflowers, sweet corn, swiss chard, thyme

2. February

   Start indoors: basil, celery, eggplants, peppers, tomatoes

   Plant or sow outdoors: avocados, garden mums, ginger, green onions, st. augustinegrass, sunflowers, sweet corn

3. March

   Start indoors: basil, cantaloupes, celery, cucumbers, pumpkins, tomatoes, watermelons, winter squash, zucchini

   Plant or sow outdoors: ginger, st. augustinegrass

4. April

   Start indoors: cosmos, cucumbers, okra, pumpkins, winter squash, zucchini

   Plant or sow outdoors: basil, cantaloupes, cucumbers, eggplants, green beans, peppers, pumpkins, tomatoes, watermelons, winter squash, zucchini

5. May

   Start indoors: zinnias

   Plant or sow outdoors: bermudagrass, celery, centipedegrass, cosmos, okra, peanuts, sweet potatoes, zoysiagrass

6. June

   Plant or sow outdoors: bermudagrass, centipedegrass, okra, zinnias, zoysiagrass

7. August

   Plant for fall: peppers, potatoes, tomatoes

8. September

   Start indoors: onions

   Plant for fall: bearded irises, broccoli, brussels sprouts, carrots, collard greens, cucumbers, green beans, lettuce, peas, peppers, snapdragons, sweet corn, swiss chard, tomatoes, zucchini

9. October

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

   Plant for fall: azaleas, bearded irises, beets, broccoli, cabbages, carrots, cauliflower, clematis, collard greens, coneflowers, daylilies, hostas, hydrangeas, kale, lettuce, peas, radishes, roses, saffron, snapdragons, spinach, swiss chard, turnips, zucchini

10. November

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

    Plant or sow outdoors: asparagus, black-eyed susans, blueberries, garlic, grapes, grass seed, green onions, hollyhocks, kentucky bluegrass, onions, peas, poppies, raspberries, rhubarb, strawberries, sweet peas, tall fescue, turnips, wildflowers

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

11. December

    Start indoors: cilantro, ginger, marigolds, nasturtiums, ranunculus, spinach, swiss chard

    Plant or sow outdoors: asparagus, beets, black-eyed susans, blackberries, blueberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, collard greens, dahlias, dill, figs, garlic, gladioli, grapes, grass seed, green onions, hollyhocks, kale, kentucky bluegrass, leeks, lettuce, onions, parsley, peas, peppers, poppies, potatoes, radishes, ranunculus, raspberries, rhubarb, roses, snapdragons, spinach, strawberries, sweet peas, swiss chard, tall fescue, turnips, wildflowers

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

Frost dates and zones by ZIP code in Concord

All 5 of Concord's main ZIP codes take their frost dates from Concord Buchanan Fld, so the dates on this page apply across the city. Every one of them is in zone 9b.

Concord Buchanan Fld also supplies the frost dates for Pittsburg and Walnut Creek, so their planting calendars match Concord's.

Planting dates for popular crops in Concord

Nearby cities

• Walnut Creek, CA zone 9b, last frost Jan 9
• Pittsburg, CA zone 9b, last frost Jan 9
• Antioch, CA zone 9b, last frost Jan 12
• San Ramon, CA zone 9b, last frost Feb 15
• Brentwood, CA zone 9b, last frost Jan 12
• Vallejo, CA zone 9b, last frost Mar 5