Frost Dates for Wasilla, AK 99654
Last spring frost May 26 · First fall frost September 13 · 110 frost-free days · USDA Zone 5a
ZIP 99654 has about 44,600 people, the largest of 2 ZIP codes in Wasilla.
Short season: 110 frost-free days. Spring frost risk spans May 11–June 10 (30 days). Fall frost risk spans August 25–September 30 (36 days).
Frost probability for 99654
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 10 | May 26 | May 11 |
| Fall (first frost) | August 25 | September 13 | September 30 |
Dates come from NOAA 1971–2000 freeze probabilities at WASILLA 3 S (8.3 km away); the 50% date is the median year.
Frost dates by ZIP code in Wasilla, AK
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 99654 | May 26 | September 13 | 5a |
| 99623 | May 30 | September 10 | 4b |
Which crops fit a 110-day season in Wasilla
In Wasilla (110 frost-free days, a short season), 30 of 56 planner crops fit outright, 15 get two plantings, 8 need an indoor start, 2 don't reliably mature, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 21 | Jun 9–Jun 16 | 68 | head-start: Even planted out Jun 9, the outdoor season is about 12 days short; choose an early variety or grow under cover. | — |
| Pepper | Apr 14 | Jun 9–Jun 16 | 68 | head-start: Even planted out Jun 9, the outdoor season is about 7 days short; choose an early variety or grow under cover. | — |
| Lettuce | Mar 31 | Apr 28–May 5 | 145 | two-plantings: Plant Apr 28 and again by Jul 23; both mature before Sep 20. | Jul 23 |
| Carrots | — | May 5–May 12 | 152 | fits: 70 days to maturity, 152 available after May 5. | Jul 12 |
| Cucumber | May 5 | Jun 9–Jun 16 | 82 | fits: 60 days to maturity, 82 available after Jun 9. | Jun 17 |
| Beans | — | Jun 2–Jun 16 | 96 | fits: 60 days to maturity, 96 available after Jun 2. | Jun 24 |
| Peas | — | Mar 31–Jun 9 | 173 | fits: 65 days to maturity, 173 available after Mar 31. | Jul 3 |
| Zucchini | May 12 | Jun 9–Jun 16 | 82 | fits: 55 days to maturity, 82 available after Jun 9. | Jun 22 |
| Onion | Mar 3 | Apr 28–May 12 | 145 | fits: 100 days to maturity, 145 available after Apr 28. | — |
| Spinach | — | Mar 31–May 19 | 187 | two-plantings: Plant Mar 31 and again by Aug 11; both mature before Oct 4. | Aug 11 |
| Kale | Mar 17 | Apr 28–May 12 | 159 | two-plantings: Plant Apr 28 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Broccoli | Mar 31 | Apr 28–May 12 | 145 | fits: 80 days to maturity, 145 available after Apr 28. | Jun 18 |
| Cabbage | Mar 31 | Apr 28–May 12 | 159 | fits: 70 days to maturity, 159 available after Apr 28. | Jul 12 |
| Radish | — | Mar 31–Jun 23 | 173 | two-plantings: Plant Mar 31 and again by Aug 12; both mature before Sep 20. | Aug 12 |
| Beets | — | Mar 31–Jun 23 | 173 | two-plantings: Plant Mar 31 and again by Jul 13; both mature before Sep 20. | Jul 13 |
| Potatoes | — | May 12–May 19 | 131 | fits: 90 days to maturity, 131 available after May 12. | — |
| Garlic | — | Sep 13 | 215 | overwinter: Plant Sep 13 to Oct 4; harvest the following summer. | Oct 4 |
| Strawberry | — | Apr 21–Jun 16 | 166 | perennial: A perennial: plant Apr 21; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 28 | Jun 2–Jun 9 | 82 | fits: 75 days to maturity, 82 available after Jun 2. | — |
| Pumpkin | May 12 | Jun 9–Jun 9 | 75 | no-fit: Needs 100 days; Wasilla has 75 after Jun 9. | — |
| Cauliflower | Apr 14 | May 19–Jun 2 | 124 | fits: 75 days to maturity, 124 available after May 19. | Jun 23 |
| Swiss Chard | Mar 31 | May 12–May 12 | 131 | two-plantings: Plant May 12 and again by Jul 13; both mature before Sep 20. | Jul 13 |
| Arugula | — | Mar 31–Jun 23 | 187 | two-plantings: Plant Mar 31 and again by Aug 11; both mature before Oct 4. | Aug 11 |
| Brussel Sprouts | Mar 31 | Apr 28–May 12 | 159 | fits: 100 days to maturity, 159 available after Apr 28. | Jun 12 |
| Butternut Squash | May 12 | Jun 9–Jun 16 | 75 | no-fit: Needs 100 days; Wasilla has 75 after Jun 9. | — |
| Eggplant | Apr 7 | Jun 9–Jun 16 | 68 | head-start: Even planted out Jun 9, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Okra | Apr 28 | Jun 2–Jun 9 | 89 | fits: 55 days to maturity, 89 available after Jun 2. | Jun 22 |
| Basil | Apr 21 | Jun 16–Jun 16 | 75 | fits: 60 days to maturity, 75 available after Jun 16. | Jun 17 |
| Cilantro | — | Apr 28–May 19 | 145 | two-plantings: Plant Apr 28 and again by Jul 18; both mature before Sep 20. | Jul 18 |
| Parsley | Mar 17 | Jun 2–Jun 9 | 110 | fits: 70 days to maturity, 110 available after Jun 2. | Jun 28 |
| Celery | Mar 17 | Jun 2–Jun 16 | 110 | head-start: Even planted out Jun 2, the outdoor season is about 10 days short; choose an early variety or grow under cover. | — |
| Scallions | Mar 17 | Apr 28–May 12 | 159 | two-plantings: Plant Apr 28 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Turnip | — | Apr 28–May 12 | 159 | two-plantings: Plant Apr 28 and again by Aug 1; both mature before Oct 4. | Aug 1 |
| Kohlrabi | — | Apr 14–Apr 28 | 173 | two-plantings: Plant Apr 14 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Bok Choy | Apr 28 | May 19–May 26 | 124 | two-plantings: Plant May 19 and again by Jul 23; both mature before Sep 20. | Jul 23 |
| Collards | Mar 17 | Apr 28–May 12 | 159 | two-plantings: Plant Apr 28 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Cantaloupe | May 12 | Jun 9–Jun 16 | 68 | head-start: Even planted out Jun 9, the outdoor season is about 17 days short; choose an early variety or grow under cover. | — |
| Chives | Mar 3 | Jun 2–Jun 9 | 124 | fits: 90 days to maturity, 124 available after Jun 2. | — |
| Dill | — | Mar 31–Jun 23 | 173 | two-plantings: Plant Mar 31 and again by Jul 13; both mature before Sep 20. | Jul 13 |
| Oregano | Mar 17 | Jun 2–Jun 9 | 124 | fits: 80 days to maturity, 124 available after Jun 2. | — |
| Rosemary | Mar 3 | Jun 2–Jun 9 | 110 | fits: 80 days to maturity, 110 available after Jun 2. | — |
| Sage | Mar 31 | Jun 2–Jun 9 | 124 | fits: 75 days to maturity, 124 available after Jun 2. | — |
| Thyme | Mar 17 | Jun 2–Jun 9 | 124 | fits: 90 days to maturity, 124 available after Jun 2. | — |
| Calendula | Apr 14 | May 12–May 26 | 131 | two-plantings: Plant May 12 and again by Jul 18; both mature before Sep 20. | Jul 18 |
| Cosmos | Apr 28 | May 26–Jun 9 | 96 | fits: 60 days to maturity, 96 available after May 26. | Jun 17 |
| Lavender | Mar 3 | May 26–Jun 9 | 131 | fits: 90 days to maturity, 131 available after May 26. | — |
| Marigolds | Apr 14 | May 26–Jun 2 | 96 | fits: 50 days to maturity, 96 available after May 26. | Jun 27 |
| Melons | May 12 | Jun 9–Jun 16 | 68 | head-start: Even planted out Jun 9, the outdoor season is about 17 days short; choose an early variety or grow under cover. | — |
| Mint | — | May 26–Jun 9 | 131 | fits: 90 days to maturity, 131 available after May 26. | — |
| Nasturtiums | Apr 28 | May 26–Jun 2 | 96 | fits: 55 days to maturity, 96 available after May 26. | Jun 22 |
| Pole Beans | — | Jun 2–Jun 16 | 89 | fits: 65 days to maturity, 89 available after Jun 2. | Jun 12 |
| Spaghetti Squash | May 12 | Jun 9–Jun 16 | 75 | head-start: Even planted out Jun 9, the outdoor season is about 15 days short; choose an early variety or grow under cover. | — |
| Sunflowers | — | May 26–Jun 9 | 96 | fits: 70 days to maturity, 96 available after May 26. | Jun 7 |
| Tomatillos | Mar 31 | Jun 2–Jun 9 | 75 | fits: 75 days to maturity, 75 available after Jun 2. | — |
| Watermelon | May 12 | Jun 2–Jun 9 | 75 | head-start: Even planted out Jun 2, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Yellow Squash | May 12 | Jun 9–Jun 16 | 82 | fits: 55 days to maturity, 82 available after Jun 9. | Jun 22 |
| Zinnias | Apr 28 | May 26–Jun 9 | 96 | fits: 60 days to maturity, 96 available after May 26. | Jun 17 |
Month by month in Wasilla
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost). |
| March | Start indoors: Chives (Mar 3), Lavender (Mar 3), Onion (Mar 3), Rosemary (Mar 3), Celery (Mar 17), Collards (Mar 17), +12 more. Direct sow from: Arugula (Mar 31), Beets (Mar 31), Dill (Mar 31), Peas (Mar 31), Radish (Mar 31), Spinach (Mar 31). |
| April | Start indoors: Eggplant (Apr 7), Calendula (Apr 14), Cauliflower (Apr 14), Marigolds (Apr 14), Pepper (Apr 14), Basil (Apr 21), +7 more. Direct sow from: Kohlrabi (Apr 14), Cilantro (Apr 28), Turnip (Apr 28). Transplant from: Broccoli (Apr 28), Brussel Sprouts (Apr 28), Cabbage (Apr 28), Collards (Apr 28), Kale (Apr 28), Lettuce (Apr 28), +2 more. Plant: Strawberry (Apr 21). |
| May | Start indoors: Cucumber (May 5), Butternut Squash (May 12), Cantaloupe (May 12), Melons (May 12), Pumpkin (May 12), Spaghetti Squash (May 12), +3 more. Direct sow from: Carrots (May 5), Potatoes (May 12), Sunflowers (May 26). Transplant from: Calendula (May 12), Swiss Chard (May 12), Bok Choy (May 19), Cauliflower (May 19), Cosmos (May 26), Lavender (May 26), +4 more. Last frost around May 26. |
| June | Direct sow from: Beans (Jun 2), Pole Beans (Jun 2). Transplant from: Celery (Jun 2), Chives (Jun 2), Corn (Jun 2), Okra (Jun 2), Oregano (Jun 2), Parsley (Jun 2), +17 more. Last sowing dates: Sunflowers (Jun 7), Brussel Sprouts (Jun 12), Pole Beans (Jun 12), Basil (Jun 17), Cosmos (Jun 17), Cucumber (Jun 17), +10 more. |
| July | Last sowing dates: Peas (Jul 3), Cabbage (Jul 12), Carrots (Jul 12), Beets (Jul 13), Dill (Jul 13), Swiss Chard (Jul 13), +8 more. |
| August | Last sowing dates: Turnip (Aug 1), Arugula (Aug 11), Spinach (Aug 11), Radish (Aug 12). |
| September | Direct sow from: Garlic (Sep 13). First frost around September 13. |
| October | Last sowing dates: Garlic (Oct 4). |
| November | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Wasilla, AK (ZIP 99654)?
The median last spring frost date for Wasilla, AK (ZIP code 99654) is around May 26. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before May 11; one in ten it runs past June 10.
What is the first fall frost date in Wasilla, AK?
The median first fall frost date for Wasilla, AK is around September 13. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around August 25 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Wasilla, AK?
The frost-free growing season in Wasilla is about 110 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Wasilla (110 frost-free days, a short season), 30 of 56 planner crops fit outright, 15 get two plantings, 8 need an indoor start, 2 don't reliably mature, 1 crop is perennial.
What USDA hardiness zone is Wasilla, AK?
Wasilla, AK is in USDA hardiness zone 5a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Wasilla, AK?
Start tomatoes indoors Apr 21 and plant out Jun 9 in Wasilla. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Wasilla?
Two: plant Apr 28 and again by Jul 23; both mature before Sep 20.
When do I plant garlic in Wasilla?
Sep 13 to Oct 4; it overwinters and is ready the following summer.
Can I grow Celery in Wasilla?
Yes, with help. Even planted out Jun 2, the outdoor season is about 10 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Palmer (ZIP 99645) has 117 frost-free days, 7 more than Wasilla (ZIP 99654). See Palmer ZIP 99645 frost dates
Nearby and related
- Frost dates for Palmer, AK 99645 (16.7 mi)
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- Frost dates for Anchorage, AK 99515 (37.2 mi)
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