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Medford, Oregon planting calendar and frost dates

Medford is in USDA hardiness zone 8b. The last spring frost typically comes around May 6 and the first fall frost around October 8, giving about 154 frost-free days a year.

Hardiness zone
Zone 8b
Typical last frost
May 6
Typical first frost
October 8
Frost-free season
154 days

Frost dates in Medford

Last spring frost

  • April 20Risky: frost later than this in 9 years out of 10
  • May 6Typical: a later frost in half of years
  • May 27Safe: a later frost only 1 year in 10

First fall frost

  • September 21Risky: frost earlier than this 1 year in 10
  • October 8Typical: an earlier frost in half of years
  • October 26Late: frost before this in 9 years out of 10

The growing season between the typical last and first frosts is about 154 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 15 and returns around October 26.

NOAA U.S. Climate Normals 1991-2020 for Ashland, 9 miles SSE of the city center and 199 feet lower. 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 Medford

  1. January

    Start indoors: onions

  2. February

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

  3. March

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

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

  4. April

    Start indoors: basil, celery, cilantro, eggplants, marigolds, nasturtiums, peppers, ranunculus, spinach, swiss chard, tomatoes

    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, leeks, lettuce, onions, parsley, peas, poppies, potatoes, radishes, ranunculus, raspberries, rhubarb, roses, snapdragons, spinach, strawberries, swiss chard, turnips, wildflowers

  5. May

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

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

  6. June

    Start indoors: zinnias

    Plant or sow outdoors: asparagus, basil, bermudagrass, cantaloupes, celery, centipedegrass, cosmos, cucumbers, eggplants, garden mums, green beans, green onions, okra, peanuts, peppers, pumpkins, st. augustinegrass, sweet potatoes, tomatoes, watermelons, winter squash, zoysiagrass, zucchini

  7. July

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

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

  8. August

    Plant or sow outdoors: bermudagrass, centipedegrass, zoysiagrass

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

  9. September

    Plant for fall: cabbages, cauliflower, crocuses, daffodils, daylilies, grass seed, hostas, hyacinths, kale, lilies, ornamental alliums, peonies, radishes, saffron, spinach, tulips

  10. October

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

Frost dates and zones by ZIP code in Medford

Medford's 3 main ZIP codes take their frost dates from 2 different NOAA stations: the typical last frost ranges from April 8 in 97501 to May 6 in 97504. Every one of them is in zone 8b.

ZIP codeZoneWeather stationTypical last frostTypical first frost
975018bMedford Rogue Vly Airport, 6.7 mi NApr 8Oct 29
975028bMedford Rogue Vly Airport, 4.2 mi ESEApr 8Oct 29
975048bAshland, 9 mi SSEMay 6Oct 8

Planting dates for popular crops in Medford

PlantStart indoorsPlant or sow outdoorsFall planting
TomatoesApr 12 to 26Jun 7 to 21—
Strawberries—Mar 25 to Apr 8—
LettuceMar 11 to 25Apr 29 to May 13Jul 9 to Aug 13
CilantroMar 25 to Apr 8May 6 to 13—
BasilApr 19 to May 3Jun 7 to 14—
Potatoes—Apr 22 to 29—
Garlic—Mar 25 to Apr 8Oct 8 to 22
OnionsJan 14 to Feb 25Apr 8 to 22—
CucumbersMay 10 to 24Jun 7 to 21—
PumpkinsMay 10 to 24Jun 7 to 21—
PeppersMar 22 to Apr 19Jun 7 to 21—
Carrots—Apr 15 to May 6Jul 16 to Aug 6
Sweet Potatoes—Jun 27 to Jul 4—
WatermelonsMay 3 to 17Jun 7 to 21—
Sweet Corn—May 6 to 20—
Green Beans—Jun 7 to 21—
ZucchiniMay 10 to 24Jun 7 to 21—
BroccoliFeb 18 to Mar 11Apr 8 to 22Jul 23 to Aug 20
Peas—Mar 25 to Apr 8Jul 16 to 30
SpinachMar 25 to Apr 1Apr 29 to May 13Jul 30 to Sep 3
Sunflowers—May 6 to 27—
ZinniasJun 19 to 26Jul 17 to 31—
Tulips——Aug 27 to Oct 22
Daffodils——Aug 27 to Oct 8
Grass Seed—Mar 25 to Apr 8Aug 27 to Sep 10

Nearby cities

Planting in OregonAbout zone 8bPrintable calendar for Medford

Questions

When is the last frost in Medford?

Around May 6 in a typical year, based on NOAA's 1991-2020 records for Ashland. There is still a 1 in 10 chance of frost after May 27.

What planting zone is Medford in?

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

When should I plant tomatoes in Medford?

Start seeds indoors April 12 to 26 and set plants out June 7 to 21.

When is the first frost in Medford?

Around October 8 in a typical year, and before September 21 about 1 year in 10.