Lake Havasu City, Arizona planting calendar and frost dates
Lake Havasu City is in USDA hardiness zone 10a. The last spring frost typically comes around February 18 and the first fall frost around December 2, giving about 288 frost-free days a year.
- Hardiness zone
- Zone 10a
- Typical last frost
- February 18
- Typical first frost
- December 2
- Frost-free season
- 288 days
Frost dates in Lake Havasu City
Last spring frost
- January 24Risky: frost later than this in 9 years out of 10
- February 18Typical: a later frost in half of years
- March 16Safe: a later frost only 1 year in 10
First fall frost
- November 16Risky: frost earlier than this 1 year in 10
- December 2Typical: an earlier frost in half of years
- December 22Late: frost before this in 9 years out of 10
The growing season between the typical last and first frosts is about 288 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 January 19 and returns around December 16.
NOAA U.S. Climate Normals 1991-2020 for Yucca 1 Nne, 22.2 miles NNE of the city center and 304 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 Lake Havasu City
January
Start indoors: black-eyed susans, cabbages, celery, chives, cilantro, collard greens, eggplants, ginger, lettuce, marigolds, nasturtiums, peppers, ranunculus, sage, snapdragons, spinach, swiss chard, tomatoes
Plant or sow outdoors: asparagus, beets, black-eyed susans, blackberries, blueberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, collard greens, figs, garlic, gladioli, grapes, grass seed, green onions, hollyhocks, kale, leeks, lettuce, onions, parsley, peas, poppies, potatoes, radishes, ranunculus, raspberries, rhubarb, roses, spinach, strawberries, swiss chard, turnips, wildflowers
February
Start indoors: basil, cantaloupes, celery, cucumbers, eggplants, peppers, pumpkins, ranunculus, tomatoes, watermelons, winter squash, zucchini
Plant or sow outdoors: asparagus, beets, black-eyed susans, blackberries, broccoli, cabbages, carrots, cauliflower, chives, cilantro, 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
March
Start indoors: cantaloupes, cosmos, cucumbers, okra, pumpkins, watermelons, winter squash, 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, petunias, pumpkins, rosemary, sage, st. augustinegrass, sunflowers, sweet corn, sweet peas, tall fescue, thyme, tomatoes, watermelons, winter squash, zucchini
April
Start indoors: zinnias
Plant or sow outdoors: bermudagrass, cantaloupes, celery, centipedegrass, cosmos, cucumbers, eggplants, green beans, green onions, okra, peanuts, peppers, pumpkins, st. augustinegrass, sweet potatoes, tomatoes, watermelons, winter squash, zoysiagrass, zucchini
May
Plant or sow outdoors: bermudagrass, celery, centipedegrass, cosmos, okra, peanuts, zinnias, zoysiagrass
August
Plant for fall: brussels sprouts, peppers, potatoes, sweet corn, tomatoes
September
Plant for fall: bearded irises, beets, broccoli, brussels sprouts, cabbages, carrots, cauliflower, collard greens, cucumbers, daylilies, green beans, kale, lettuce, peas, peppers, radishes, snapdragons, spinach, sweet corn, swiss chard, turnips, zucchini
October
Start indoors: onions
Plant for fall: azaleas, bearded irises, beets, broccoli, cabbages, 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, tall fescue, tulips, turnips
November
Start indoors: collard greens, leeks, onions, petunias, ranunculus
Plant for fall: crocuses, daffodils, daylilies, grass seed, hostas, hyacinths, kale, kentucky bluegrass, lilies, ornamental alliums, peonies, perennial ryegrass, radishes, saffron, tall fescue, tulips
December
Start indoors: black-eyed susans, broccoli, cabbages, cauliflower, chives, collard greens, ginger, kale, leeks, lettuce, marigolds, onions, oregano, parsley, petunias, ranunculus, rosemary, sage, snapdragons
Plant for fall: crocuses, daffodils, garlic, hyacinths, lilies, ornamental alliums, peonies, tulips
Frost dates and zones by ZIP code in Lake Havasu City
Lake Havasu City's 3 main ZIP codes take their frost dates from 2 different NOAA stations. Every one of them is in zone 10a.
Planting dates for popular crops in Lake Havasu City
| Plant | Start indoors | Plant or sow outdoors | Fall planting |
|---|---|---|---|
| Tomatoes | Jan 26 to Feb 9 | Mar 23 to Apr 6 | Aug 19 to 26 |
| Strawberries | — | Jan 7 to 21 | — |
| Lettuce | Dec 24 to Jan 7 | Feb 11 to 25 | Sep 2 to Oct 7 |
| Cilantro | Jan 7 to 21 | Feb 18 to 25 | — |
| Basil | Feb 2 to 16 | Mar 23 to 30 | — |
| Potatoes | — | Jan 28 to Feb 4 | Aug 12 to 19 |
| Garlic | — | Jan 7 to 21 | Dec 2 to 16 |
| Onions | Oct 29 to Dec 10 | Jan 21 to Feb 4 | — |
| Cucumbers | Feb 23 to Mar 9 | Mar 23 to Apr 6 | Sep 2 to 16 |
| Pumpkins | Feb 23 to Mar 9 | Mar 23 to Apr 6 | — |
| Peppers | Jan 5 to Feb 2 | Mar 23 to Apr 6 | Aug 12 to Sep 9 |
| Carrots | — | Jan 28 to Feb 18 | Sep 9 to 30 |
| Sweet Potatoes | — | Apr 18 to 25 | — |
| Watermelons | Feb 16 to Mar 2 | Mar 23 to Apr 6 | — |
| Sweet Corn | — | Feb 18 to Mar 4 | Aug 26 to Sep 9 |
| Green Beans | — | Mar 23 to Apr 6 | Sep 9 to 16 |
| Zucchini | Feb 23 to Mar 9 | Mar 23 to Apr 6 | Sep 9 to 23 |
| Broccoli | Dec 3 to 24 | Jan 21 to Feb 4 | Sep 16 to Oct 14 |
| Peas | — | Jan 7 to 21 | Sep 9 to 23 |
| Spinach | Jan 7 to 14 | Feb 11 to 25 | Sep 23 to Oct 28 |
| Sunflowers | — | Feb 18 to Mar 11 | — |
| Zinnias | Apr 7 to 14 | May 5 to 19 | — |
| Tulips | — | — | Oct 21 to Dec 16 |
| Daffodils | — | — | Oct 21 to Dec 2 |
| Grass Seed | — | Jan 7 to 21 | Oct 21 to Nov 4 |
Nearby cities
- Henderson, NV zone 9b, last frost Jan 20
- Prescott Valley, AZ zone 7b, last frost Apr 20
- Surprise, AZ zone 9b, last frost Jan 20
- Buckeye, AZ zone 9b, last frost Jan 20
- Indio, CA zone 10a
- Peoria, AZ zone 9b, last frost Jan 20
Planting in ArizonaAbout zone 10aPrintable calendar for Lake Havasu City
Questions
When is the last frost in Lake Havasu City?
Around February 18 in a typical year, based on NOAA's 1991-2020 records for Yucca 1 Nne. There is still a 1 in 10 chance of frost after March 16.
What planting zone is Lake Havasu City in?
USDA hardiness zone 10a (2023 map). The zone tells you which perennials survive the winter; planting dates depend on frost dates instead.
When should I plant tomatoes in Lake Havasu City?
Start seeds indoors January 26 to February 9 and set plants out March 23 to April 6.
When is the first frost in Lake Havasu City?
Around December 2 in a typical year, and before November 16 about 1 year in 10.