Ogden, Utah planting calendar and frost dates
Ogden is in USDA hardiness zone 7a. The last spring frost typically comes around April 22 and the first fall frost around October 22, giving about 180 frost-free days a year.
- Typical last frost
- April 22
- Typical first frost
- October 22
- Frost-free season
- 180 days
Frost dates in Ogden
Last spring frost
- April 4Risky: frost later than this in 9 years out of 10
- April 22Typical: a later frost in half of years
- May 10Safe: a later frost only 1 year in 10
First fall frost
- October 7Risky: frost earlier than this 1 year in 10
- October 22Typical: an earlier frost in half of years
- November 6Late: frost before this in 9 years out of 10
The growing season between the typical last and first frosts is about 180 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 3 and returns around November 2.
NOAA U.S. Climate Normals 1991-2020 for Ogden Hinkley Airport, 7.5 miles SE of the city center and 251 feet higher. 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 Ogden
January
Start indoors: collard greens, leeks, onions, petunias, ranunculus
February
Start indoors: black-eyed susans, broccoli, cabbages, cauliflower, chives, collard greens, kale, leeks, lettuce, marigolds, onions, oregano, parsley, petunias, ranunculus, rosemary, sage, snapdragons
March
Start indoors: black-eyed susans, cabbages, cauliflower, celery, chives, cilantro, collard greens, eggplants, ginger, lettuce, marigolds, nasturtiums, peppers, ranunculus, sage, snapdragons, spinach, swiss chard, tomatoes
Plant or sow outdoors: beets, black-eyed susans, blackberries, blueberries, broccoli, cauliflower, chives, cilantro, collard greens, figs, garlic, gladioli, grapes, grass seed, hollyhocks, kale, leeks, onions, peas, poppies, radishes, ranunculus, raspberries, rhubarb, roses, spinach, strawberries, swiss chard, turnips, wildflowers
April
Start indoors: basil, cantaloupes, cosmos, cucumbers, eggplants, okra, peppers, pumpkins, ranunculus, tomatoes, watermelons, winter squash, zucchini
Plant or sow outdoors: asparagus, beets, black-eyed susans, blackberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, collard greens, dahlias, dill, figs, garden mums, gladioli, grapes, green onions, lavenders, leeks, lettuce, lilies, marigolds, mints, nasturtiums, onions, oregano, parsley, petunias, potatoes, radishes, ranunculus, rosemary, roses, sage, snapdragons, spinach, sunflowers, sweet corn, swiss chard, thyme, turnips
May
Start indoors: cosmos, cucumbers, okra, pumpkins, winter squash, zinnias, zucchini
Plant or sow outdoors: asparagus, basil, cantaloupes, cucumbers, eggplants, garden mums, ginger, grapes, green beans, green onions, kentucky bluegrass, lavenders, lilies, marigolds, mints, nasturtiums, oregano, parsley, peppers, perennial ryegrass, petunias, pumpkins, rosemary, sage, st. augustinegrass, sunflowers, sweet corn, sweet peas, tall fescue, thyme, tomatoes, watermelons, winter squash, zucchini
June
Plant or sow outdoors: asparagus, bermudagrass, cantaloupes, celery, centipedegrass, cosmos, cucumbers, eggplants, green beans, green onions, okra, peanuts, peppers, pumpkins, st. augustinegrass, sweet potatoes, tomatoes, watermelons, winter squash, zinnias, zoysiagrass, zucchini
July
Plant or sow outdoors: bermudagrass, centipedegrass, st. augustinegrass, zinnias, zoysiagrass
Plant for fall: bearded irises, brussels sprouts, carrots, collard greens, lettuce, peas, snapdragons, swiss chard
August
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
September
Plant for fall: azaleas, bearded irises, beets, broccoli, cabbages, cauliflower, clematis, coneflowers, crocuses, daffodils, daylilies, grass seed, hostas, hyacinths, hydrangeas, kale, lilies, ornamental alliums, peonies, radishes, roses, saffron, spinach, tulips, turnips
October
Plant for fall: crocuses, daffodils, daylilies, garlic, hyacinths, lilies, ornamental alliums, peonies, tulips
November
Plant for fall: crocuses, garlic, hyacinths, ornamental alliums, tulips
December
Start indoors: onions
Frost dates and zones by ZIP code in Ogden
All 4 of Ogden's main ZIP codes take their frost dates from Ogden Hinkley Airport, so the dates on this page apply across the city. The hardiness zone is 6b in 84403, and 7a in 84401, 84404, 84405.
| ZIP code | Zone | Weather station | Typical last frost | Typical first frost |
|---|---|---|---|---|
| 84401 | 7a | Ogden Hinkley Airport, 1.9 mi SE | Apr 22 | Oct 22 |
| 84403 | 6b | — | — | — |
| 84404 | 7a | Ogden Hinkley Airport, 7.5 mi SE | Apr 22 | Oct 22 |
| 84405 | 7a | Ogden Hinkley Airport, 4.3 mi NW | Apr 22 | Oct 22 |
Ogden Hinkley Airport also supplies the frost dates for Layton, so their planting calendars match Ogden's.
Planting dates for popular crops in Ogden
| Plant | Start indoors | Plant or sow outdoors | Fall planting |
|---|---|---|---|
| Tomatoes | Mar 25 to Apr 8 | May 20 to Jun 3 | — |
| Strawberries | — | Mar 11 to 25 | — |
| Lettuce | Feb 25 to Mar 11 | Apr 15 to 29 | Jul 23 to Aug 27 |
| Cilantro | Mar 11 to 25 | Apr 22 to 29 | — |
| Basil | Apr 1 to 15 | May 20 to 27 | — |
| Potatoes | — | Apr 20 to 27 | — |
| Garlic | — | Mar 11 to 25 | Oct 22 to Nov 5 |
| Onions | Dec 31 to Feb 11 | Mar 25 to Apr 8 | — |
| Cucumbers | Apr 22 to May 6 | May 20 to Jun 3 | — |
| Pumpkins | Apr 22 to May 6 | May 20 to Jun 3 | — |
| Peppers | Mar 4 to Apr 1 | May 20 to Jun 3 | — |
| Carrots | — | Apr 1 to 22 | Jul 30 to Aug 20 |
| Sweet Potatoes | — | Jun 7 to 14 | — |
| Watermelons | Apr 15 to 29 | May 20 to Jun 3 | — |
| Sweet Corn | — | Apr 22 to May 6 | — |
| Green Beans | — | May 20 to Jun 3 | — |
| Zucchini | Apr 22 to May 6 | May 20 to Jun 3 | — |
| Broccoli | Feb 4 to 25 | Mar 25 to Apr 8 | Aug 6 to Sep 3 |
| Peas | — | Mar 11 to 25 | Jul 30 to Aug 13 |
| Spinach | Mar 11 to 18 | Apr 15 to 29 | Aug 13 to Sep 17 |
| Sunflowers | — | Apr 22 to May 13 | — |
| Zinnias | May 24 to 31 | Jun 21 to Jul 5 | — |
| Tulips | — | — | Sep 10 to Nov 5 |
| Daffodils | — | — | Sep 10 to Oct 22 |
| Grass Seed | — | Mar 11 to 25 | Sep 10 to 24 |
Nearby cities
- Layton, UT zone 7a, last frost Apr 22
- Salt Lake City, UT zone 7b, last frost Apr 8
- Logan, UT zone 6a, last frost Apr 30
- West Valley City, UT zone 7b, last frost Apr 8
- Millcreek, UT zone 6b, last frost Apr 8
- Taylorsville, UT zone 7b, last frost Apr 8
Planting in UtahAbout zone 7aPrintable calendar for Ogden
Questions
When is the last frost in Ogden?
Around April 22 in a typical year, based on NOAA's 1991-2020 records for Ogden Hinkley Airport. There is still a 1 in 10 chance of frost after May 10.
What planting zone is Ogden in?
USDA hardiness zone 7a (2023 map), with parts of the city in zone 6b and 6a. The zone tells you which perennials survive the winter; planting dates depend on frost dates instead.
When should I plant tomatoes in Ogden?
Start seeds indoors March 25 to April 8 and set plants out May 20 to June 3.
When is the first frost in Ogden?
Around October 22 in a typical year, and before October 7 about 1 year in 10.