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Sandy, Utah planting calendar and frost dates

Sandy is in USDA hardiness zone 6b. The last spring frost typically comes around June 11 and the first fall frost around September 18, giving about 98 frost-free days a year.

Hardiness zone
Zone 6b (parts in 7b, 7a)
Typical last frost
June 11
Typical first frost
September 18
Frost-free season
98 days

Frost dates in Sandy

Last spring frost

  • May 26Risky: frost later than this in 9 years out of 10
  • June 11Typical: a later frost in half of years
  • June 27Safe: a later frost only 1 year in 10

First fall frost

  • September 3Risky: frost earlier than this 1 year in 10
  • September 18Typical: an earlier frost in half of years
  • September 29Late: frost before this in 9 years out of 10

The growing season between the typical last and first frosts is about 98 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 June 1 and returns around September 27.

NOAA U.S. Climate Normals 1991-2020 for Alta, 4.9 miles ENE of the city center and 353 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 Sandy

  1. February

    Start indoors: onions

  2. March

    Start indoors: broccoli, cauliflower, celery, collard greens, kale, leeks, onions, petunias, ranunculus

  3. April

    Start indoors: black-eyed susans, broccoli, cabbages, cauliflower, celery, chives, cilantro, collard greens, cosmos, ginger, kale, leeks, lettuce, marigolds, nasturtiums, okra, onions, 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. May

    Start indoors: basil, cilantro, cosmos, eggplants, ginger, marigolds, nasturtiums, okra, peppers, ranunculus, spinach, swiss chard, tomatoes, zinnias

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

  5. June

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

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

    Plant for fall: bearded irises, brussels sprouts, carrots, collard greens, lettuce, peas, snapdragons, swiss chard

  6. July

    Plant or sow outdoors: asparagus, basil, bermudagrass, cantaloupes, centipedegrass, cucumbers, eggplants, garden mums, ginger, green beans, green onions, kentucky bluegrass, okra, peanuts, peppers, perennial ryegrass, pumpkins, st. augustinegrass, sunflowers, sweet peas, sweet potatoes, tall fescue, tomatoes, watermelons, winter squash, zoysiagrass, zucchini

    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

  7. August

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

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

  8. September

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

  9. October

    Plant for fall: crocuses, garlic, hyacinths, ornamental alliums, tulips

Frost dates and zones by ZIP code in Sandy

Sandy's 4 main ZIP codes take their frost dates from 2 different NOAA stations: the typical last frost ranges from April 29 in 84070 to June 11 in 84092. The hardiness zone is 6b in 84092, and 7b in 84070, 84093, 84094.

ZIP codeZoneWeather stationTypical last frostTypical first frost
840707bCottonwood Weir, 6.2 mi ENEApr 29Oct 22
840926bAlta, 4.9 mi ENEJun 11Sep 18
840937bCottonwood Weir, 2.9 mi NEApr 29Oct 22
840947bCottonwood Weir, 5.2 mi NEApr 29Oct 22

Planting dates for popular crops in Sandy

PlantStart indoorsPlant or sow outdoorsFall planting
TomatoesMay 11 to 25Jul 6 to 20—
Strawberries—Apr 30 to May 14—
LettuceApr 16 to 30Jun 4 to 18Jun 19 to Jul 24
CilantroApr 30 to May 14Jun 11 to 18—
BasilMay 18 to Jun 1Jul 6 to 13—
Potatoes—Jun 6 to 13—
Garlic—Apr 30 to May 14Sep 18 to Oct 2
OnionsFeb 19 to Apr 2May 14 to 28—
CucumbersJun 8 to 22Jul 6 to 20—
PumpkinsJun 8 to 22Jul 6 to 20—
PeppersApr 20 to May 18Jul 6 to 20—
Carrots—May 21 to Jun 11Jun 26 to Jul 17
Sweet Potatoes—Jun 25 to Jul 2—
WatermelonsJun 1 to 15Jul 6 to 20—
Sweet Corn—Jun 11 to 25—
Green Beans—Jul 6 to 20—
ZucchiniJun 8 to 22Jul 6 to 20—
BroccoliMar 26 to Apr 16May 14 to 28Jul 3 to 31
Peas—Apr 30 to May 14Jun 26 to Jul 10
SpinachApr 30 to May 7Jun 4 to 18Jul 10 to Aug 14
Sunflowers—Jun 11 to Jul 2—
ZinniasMay 14 to 21Jun 11 to 25—
Tulips——Aug 7 to Oct 2
Daffodils——Aug 7 to Sep 18
Grass Seed—Apr 30 to May 14Aug 7 to 21

Nearby cities

Planting in UtahAbout zone 6bPrintable calendar for Sandy

Questions

When is the last frost in Sandy?

Around June 11 in a typical year, based on NOAA's 1991-2020 records for Alta. There is still a 1 in 10 chance of frost after June 27.

What planting zone is Sandy in?

USDA hardiness zone 6b (2023 map), with parts of the city in zone 7b and 7a. The zone tells you which perennials survive the winter; planting dates depend on frost dates instead.

When should I plant tomatoes in Sandy?

Start seeds indoors May 11 to 25 and set plants out July 6 to 20.

When is the first frost in Sandy?

Around September 18 in a typical year, and before September 3 about 1 year in 10.