Frost Dates for Hayden, ID 83835
Last spring frost May 15 · First fall frost September 22 · 130 frost-free days · USDA Zone 6b
ZIP 83835 has about 24,200 people.
Moderate season: 130 frost-free days. Spring frost risk spans April 28–May 31 (33 days). Fall frost risk spans September 7–October 8 (31 days).
Frost probability for 83835
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 31 | May 15 | April 28 |
| Fall (first frost) | September 7 | September 22 | October 8 |
Dates come from NOAA 1971–2000 freeze probabilities at SAINT MARIES (53.7 km away); the 50% date is the median year.
Which crops fit a 130-day season in Hayden
In Hayden (130 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 get two plantings, 2 need an indoor start, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 10 | May 29–Jun 5 | 88 | fits: 80 days to maturity, 88 available after May 29. | — |
| Pepper | Apr 3 | May 29–Jun 5 | 88 | fits: 75 days to maturity, 88 available after May 29. | — |
| Lettuce | Mar 20 | Apr 17–Apr 24 | 165 | two-plantings: Plant Apr 17 and again by Aug 1; both mature before Sep 29. | Aug 1 |
| Carrots | — | Apr 24–May 1 | 172 | fits: 70 days to maturity, 172 available after Apr 24. | Jul 21 |
| Cucumber | Apr 24 | May 29–Jun 5 | 102 | fits: 60 days to maturity, 102 available after May 29. | Jun 26 |
| Beans | — | May 22–Jun 5 | 116 | fits: 60 days to maturity, 116 available after May 22. | Jul 3 |
| Peas | — | Mar 20–May 29 | 193 | fits: 65 days to maturity, 193 available after Mar 20. | Jul 12 |
| Zucchini | May 1 | May 29–Jun 5 | 102 | fits: 55 days to maturity, 102 available after May 29. | Jul 1 |
| Onion | Feb 20 | Apr 17–May 1 | 165 | fits: 100 days to maturity, 165 available after Apr 17. | — |
| Spinach | — | Mar 20–May 8 | 207 | two-plantings: Plant Mar 20 and again by Aug 20; both mature before Oct 13. | Aug 20 |
| Kale | Mar 6 | Apr 17–May 1 | 179 | two-plantings: Plant Apr 17 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Broccoli | Mar 20 | Apr 17–May 1 | 165 | fits: 80 days to maturity, 165 available after Apr 17. | Jun 27 |
| Cabbage | Mar 20 | Apr 17–May 1 | 179 | fits: 70 days to maturity, 179 available after Apr 17. | Jul 21 |
| Radish | — | Mar 20–Jun 12 | 193 | two-plantings: Plant Mar 20 and again by Aug 21; both mature before Sep 29. | Aug 21 |
| Beets | — | Mar 20–Jun 12 | 193 | two-plantings: Plant Mar 20 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Potatoes | — | May 1–May 8 | 151 | fits: 90 days to maturity, 151 available after May 1. | — |
| Garlic | — | Sep 22 | 235 | overwinter: Plant Sep 22 to Oct 13; harvest the following summer. | Oct 13 |
| Strawberry | — | Apr 10–Jun 5 | 186 | perennial: A perennial: plant Apr 10; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 17 | May 22–May 29 | 102 | fits: 75 days to maturity, 102 available after May 22. | Jun 4 |
| Pumpkin | May 1 | May 29–May 29 | 95 | head-start: Even planted out May 29, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 3 | May 8–May 22 | 144 | fits: 75 days to maturity, 144 available after May 8. | Jul 2 |
| Swiss Chard | Mar 20 | May 1–May 1 | 151 | two-plantings: Plant May 1 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Arugula | — | Mar 20–Jun 12 | 207 | two-plantings: Plant Mar 20 and again by Aug 20; both mature before Oct 13. | Aug 20 |
| Brussel Sprouts | Mar 20 | Apr 17–May 1 | 179 | fits: 100 days to maturity, 179 available after Apr 17. | Jun 21 |
| Butternut Squash | May 1 | May 29–Jun 5 | 95 | head-start: Even planted out May 29, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Eggplant | Mar 27 | May 29–Jun 5 | 88 | fits: 70 days to maturity, 88 available after May 29. | Jun 2 |
| Okra | Apr 17 | May 22–May 29 | 109 | fits: 55 days to maturity, 109 available after May 22. | Jul 1 |
| Basil | Apr 10 | Jun 5–Jun 5 | 95 | fits: 60 days to maturity, 95 available after Jun 5. | Jun 26 |
| Cilantro | — | Apr 17–May 8 | 165 | two-plantings: Plant Apr 17 and again by Jul 27; both mature before Sep 29. | Jul 27 |
| Parsley | Mar 6 | May 22–May 29 | 130 | fits: 70 days to maturity, 130 available after May 22. | Jul 7 |
| Celery | Mar 6 | May 22–Jun 5 | 130 | fits: 120 days to maturity, 130 available after May 22. | — |
| Scallions | Mar 6 | Apr 17–May 1 | 179 | two-plantings: Plant Apr 17 and again by Jul 31; both mature before Oct 13. | Jul 31 |
| Turnip | — | Apr 17–May 1 | 179 | two-plantings: Plant Apr 17 and again by Aug 10; both mature before Oct 13. | Aug 10 |
| Kohlrabi | — | Apr 3–Apr 17 | 193 | two-plantings: Plant Apr 3 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Bok Choy | Apr 17 | May 8–May 15 | 144 | two-plantings: Plant May 8 and again by Aug 1; both mature before Sep 29. | Aug 1 |
| Collards | Mar 6 | Apr 17–May 1 | 179 | two-plantings: Plant Apr 17 and again by Jul 31; both mature before Oct 13. | Jul 31 |
| Cantaloupe | May 1 | May 29–Jun 5 | 88 | fits: 85 days to maturity, 88 available after May 29. | — |
| Chives | Feb 20 | May 22–May 29 | 144 | fits: 90 days to maturity, 144 available after May 22. | — |
| Dill | — | Mar 20–Jun 12 | 193 | two-plantings: Plant Mar 20 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Oregano | Mar 6 | May 22–May 29 | 144 | fits: 80 days to maturity, 144 available after May 22. | — |
| Rosemary | Feb 20 | May 22–May 29 | 130 | fits: 80 days to maturity, 130 available after May 22. | — |
| Sage | Mar 20 | May 22–May 29 | 144 | fits: 75 days to maturity, 144 available after May 22. | — |
| Thyme | Mar 6 | May 22–May 29 | 144 | fits: 90 days to maturity, 144 available after May 22. | — |
| Calendula | Apr 3 | May 1–May 15 | 151 | two-plantings: Plant May 1 and again by Jul 27; both mature before Sep 29. | Jul 27 |
| Cosmos | Apr 17 | May 15–May 29 | 116 | fits: 60 days to maturity, 116 available after May 15. | Jun 26 |
| Lavender | Feb 20 | May 15–May 29 | 151 | fits: 90 days to maturity, 151 available after May 15. | — |
| Marigolds | Apr 3 | May 15–May 22 | 116 | two-plantings: Plant May 15 and again by Jul 6; both mature before Sep 8. | Jul 6 |
| Melons | May 1 | May 29–Jun 5 | 88 | fits: 85 days to maturity, 88 available after May 29. | — |
| Mint | — | May 15–May 29 | 151 | fits: 90 days to maturity, 151 available after May 15. | — |
| Nasturtiums | Apr 17 | May 15–May 22 | 116 | fits: 55 days to maturity, 116 available after May 15. | Jul 1 |
| Pole Beans | — | May 22–Jun 5 | 109 | fits: 65 days to maturity, 109 available after May 22. | Jun 21 |
| Spaghetti Squash | May 1 | May 29–Jun 5 | 95 | fits: 90 days to maturity, 95 available after May 29. | — |
| Sunflowers | — | May 15–May 29 | 116 | fits: 70 days to maturity, 116 available after May 15. | Jun 16 |
| Tomatillos | Mar 20 | May 22–May 29 | 95 | fits: 75 days to maturity, 95 available after May 22. | May 28 |
| Watermelon | May 1 | May 22–May 29 | 95 | fits: 80 days to maturity, 95 available after May 22. | May 23 |
| Yellow Squash | May 1 | May 29–Jun 5 | 102 | fits: 55 days to maturity, 102 available after May 29. | Jul 1 |
| Zinnias | Apr 17 | May 15–May 29 | 116 | fits: 60 days to maturity, 116 available after May 15. | Jun 26 |
Month by month in Hayden
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 20), Lavender (Feb 20), Onion (Feb 20), Rosemary (Feb 20). |
| March | Start indoors: Celery (Mar 6), Collards (Mar 6), Kale (Mar 6), Oregano (Mar 6), Parsley (Mar 6), Scallions (Mar 6), +9 more. Direct sow from: Arugula (Mar 20), Beets (Mar 20), Dill (Mar 20), Peas (Mar 20), Radish (Mar 20), Spinach (Mar 20). |
| April | Start indoors: Calendula (Apr 3), Cauliflower (Apr 3), Marigolds (Apr 3), Pepper (Apr 3), Basil (Apr 10), Tomato (Apr 10), +7 more. Direct sow from: Kohlrabi (Apr 3), Cilantro (Apr 17), Turnip (Apr 17), Carrots (Apr 24). Transplant from: Broccoli (Apr 17), Brussel Sprouts (Apr 17), Cabbage (Apr 17), Collards (Apr 17), Kale (Apr 17), Lettuce (Apr 17), +2 more. Plant: Strawberry (Apr 10). |
| May | Start indoors: Butternut Squash (May 1), Cantaloupe (May 1), Melons (May 1), Pumpkin (May 1), Spaghetti Squash (May 1), Watermelon (May 1), +2 more. Direct sow from: Potatoes (May 1), Sunflowers (May 15), Beans (May 22), Pole Beans (May 22). Transplant from: Calendula (May 1), Swiss Chard (May 1), Bok Choy (May 8), Cauliflower (May 8), Cosmos (May 15), Lavender (May 15), +26 more. Last frost around May 15. Last sowing dates: Watermelon (May 23), Tomatillos (May 28). |
| June | Transplant from: Basil (Jun 5). Last sowing dates: Eggplant (Jun 2), Corn (Jun 4), Sunflowers (Jun 16), Brussel Sprouts (Jun 21), Pole Beans (Jun 21), Basil (Jun 26), +4 more. |
| July | Last sowing dates: Nasturtiums (Jul 1), Okra (Jul 1), Yellow Squash (Jul 1), Zucchini (Jul 1), Cauliflower (Jul 2), Beans (Jul 3), +12 more. |
| August | Last sowing dates: Bok Choy (Aug 1), Lettuce (Aug 1), Kale (Aug 5), Kohlrabi (Aug 5), Turnip (Aug 10), Arugula (Aug 20), +2 more. |
| September | Direct sow from: Garlic (Sep 22). First frost around September 22. |
| October | Last sowing dates: Garlic (Oct 13). |
| 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 Hayden, ID (ZIP 83835)?
The median last spring frost date for Hayden, ID (ZIP code 83835) is around May 15. 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 April 28; one in ten it runs past May 31.
What is the first fall frost date in Hayden, ID?
The median first fall frost date for Hayden, ID is around September 22. 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 September 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Hayden, ID?
The frost-free growing season in Hayden is about 130 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 Hayden (130 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 get two plantings, 2 need an indoor start, 1 crop is perennial.
What USDA hardiness zone is Hayden, ID?
Hayden, ID is in USDA hardiness zone 6b (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 Hayden, ID?
Start tomatoes indoors Apr 10 and plant out May 29 in Hayden. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Hayden?
Two: plant Apr 17 and again by Aug 1; both mature before Sep 29.
When do I plant garlic in Hayden?
Sep 22 to Oct 13; it overwinters and is ready the following summer.
Can I grow Butternut Squash in Hayden?
Yes, with help. Even planted out May 29, the outdoor season is about 5 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Liberty Lake (ZIP 99019) has 150 frost-free days, 20 more than Hayden (ZIP 83835). See Liberty Lake ZIP 99019 frost dates
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