Frost Dates for Grants Pass, OR 97527
Last spring frost May 6 · First fall frost October 15 · 162 frost-free days · USDA Zone 8b
ZIP 97527 has about 37,300 people, the largest of 2 ZIP codes in Grants Pass.
Moderate season: 162 frost-free days. Spring frost risk spans April 16–May 27 (41 days). Fall frost risk spans September 23–November 13 (51 days).
Frost probability for 97527
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 27 | May 6 | April 16 |
| Fall (first frost) | September 23 | October 15 | November 13 |
Dates come from NOAA 1971–2000 freeze probabilities at CAVE JUNCTION 1 WNW (32.2 km away); the 50% date is the median year.
Frost dates by ZIP code in Grants Pass, OR
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 97527 | May 6 | October 15 | 8b |
| 97526 | May 16 | October 15 | 8b |
Which crops fit a 162-day season in Grants Pass
In Grants Pass (162 frost-free days, a moderate season), 31 of 56 planner crops fit outright, 24 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 1 | May 20–May 27 | 120 | fits: 80 days to maturity, 120 available after May 20. | Jun 15 |
| Pepper | Mar 25 | May 20–May 27 | 120 | fits: 75 days to maturity, 120 available after May 20. | Jun 20 |
| Lettuce | Mar 11 | Apr 8–Apr 15 | 197 | two-plantings: Plant Apr 8 and again by Aug 24; both mature before Oct 22. | Aug 24 |
| Carrots | — | Apr 15–Apr 22 | 204 | fits: 70 days to maturity, 204 available after Apr 15. | Aug 13 |
| Cucumber | Apr 15 | May 20–May 27 | 134 | two-plantings: Plant May 20 and again by Jul 19; both mature before Oct 1. | Jul 19 |
| Beans | — | May 13–May 27 | 148 | two-plantings: Plant May 13 and again by Jul 26; both mature before Oct 8. | Jul 26 |
| Peas | — | Mar 11–May 20 | 225 | fits: 65 days to maturity, 225 available after Mar 11. | Aug 4 |
| Zucchini | Apr 22 | May 20–May 27 | 134 | two-plantings: Plant May 20 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Onion | Feb 11 | Apr 8–Apr 22 | 197 | fits: 100 days to maturity, 197 available after Apr 8. | — |
| Spinach | — | Mar 11–Apr 29 | 239 | two-plantings: Plant Mar 11 and again by Sep 12; both mature before Nov 5. | Sep 12 |
| Kale | Feb 25 | Apr 8–Apr 22 | 211 | two-plantings: Plant Apr 8 and again by Aug 28; both mature before Nov 5. | Aug 28 |
| Broccoli | Mar 11 | Apr 8–Apr 22 | 197 | fits: 80 days to maturity, 197 available after Apr 8. | Jul 20 |
| Cabbage | Mar 11 | Apr 8–Apr 22 | 211 | fits: 70 days to maturity, 211 available after Apr 8. | Aug 13 |
| Radish | — | Mar 11–Jun 3 | 225 | two-plantings: Plant Mar 11 and again by Sep 13; both mature before Oct 22. | Sep 13 |
| Beets | — | Mar 11–Jun 3 | 225 | two-plantings: Plant Mar 11 and again by Aug 14; both mature before Oct 22. | Aug 14 |
| Potatoes | — | Apr 22–Apr 29 | 183 | fits: 90 days to maturity, 183 available after Apr 22. | — |
| Garlic | — | Oct 15 | 267 | overwinter: Plant Oct 15 to Nov 5; harvest the following summer. | Nov 5 |
| Strawberry | — | Apr 1–May 27 | 218 | perennial: A perennial: plant Apr 1; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 8 | May 13–May 20 | 134 | fits: 75 days to maturity, 134 available after May 13. | Jun 27 |
| Pumpkin | Apr 22 | May 20–May 20 | 127 | fits: 100 days to maturity, 127 available after May 20. | Jun 2 |
| Cauliflower | Mar 25 | Apr 29–May 13 | 176 | fits: 75 days to maturity, 176 available after Apr 29. | Jul 25 |
| Swiss Chard | Mar 11 | Apr 22–Apr 22 | 183 | two-plantings: Plant Apr 22 and again by Aug 14; both mature before Oct 22. | Aug 14 |
| Arugula | — | Mar 11–Jun 3 | 239 | two-plantings: Plant Mar 11 and again by Sep 12; both mature before Nov 5. | Sep 12 |
| Brussel Sprouts | Mar 11 | Apr 8–Apr 22 | 211 | fits: 100 days to maturity, 211 available after Apr 8. | Jul 14 |
| Butternut Squash | Apr 22 | May 20–May 27 | 127 | fits: 100 days to maturity, 127 available after May 20. | Jun 2 |
| Eggplant | Mar 18 | May 20–May 27 | 120 | fits: 70 days to maturity, 120 available after May 20. | Jun 25 |
| Okra | Apr 8 | May 13–May 20 | 141 | two-plantings: Plant May 13 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Basil | Apr 1 | May 27–May 27 | 127 | fits: 60 days to maturity, 127 available after May 27. | Jul 19 |
| Cilantro | — | Apr 8–Apr 29 | 197 | two-plantings: Plant Apr 8 and again by Aug 19; both mature before Oct 22. | Aug 19 |
| Parsley | Feb 25 | May 13–May 20 | 162 | fits: 70 days to maturity, 162 available after May 13. | Jul 30 |
| Celery | Feb 25 | May 13–May 27 | 162 | fits: 120 days to maturity, 162 available after May 13. | Jun 10 |
| Scallions | Feb 25 | Apr 8–Apr 22 | 211 | two-plantings: Plant Apr 8 and again by Aug 23; both mature before Nov 5. | Aug 23 |
| Turnip | — | Apr 8–Apr 22 | 211 | two-plantings: Plant Apr 8 and again by Sep 2; both mature before Nov 5. | Sep 2 |
| Kohlrabi | — | Mar 25–Apr 8 | 225 | two-plantings: Plant Mar 25 and again by Aug 28; both mature before Nov 5. | Aug 28 |
| Bok Choy | Apr 8 | Apr 29–May 6 | 176 | two-plantings: Plant Apr 29 and again by Aug 24; both mature before Oct 22. | Aug 24 |
| Collards | Feb 25 | Apr 8–Apr 22 | 211 | two-plantings: Plant Apr 8 and again by Aug 23; both mature before Nov 5. | Aug 23 |
| Cantaloupe | Apr 22 | May 20–May 27 | 120 | fits: 85 days to maturity, 120 available after May 20. | Jun 10 |
| Chives | Feb 11 | May 13–May 20 | 176 | fits: 90 days to maturity, 176 available after May 13. | — |
| Dill | — | Mar 11–Jun 3 | 225 | two-plantings: Plant Mar 11 and again by Aug 14; both mature before Oct 22. | Aug 14 |
| Oregano | Feb 25 | May 13–May 20 | 176 | fits: 80 days to maturity, 176 available after May 13. | — |
| Rosemary | Feb 11 | May 13–May 20 | 162 | fits: 80 days to maturity, 162 available after May 13. | — |
| Sage | Mar 11 | May 13–May 20 | 176 | fits: 75 days to maturity, 176 available after May 13. | — |
| Thyme | Feb 25 | May 13–May 20 | 176 | fits: 90 days to maturity, 176 available after May 13. | — |
| Calendula | Mar 25 | Apr 22–May 6 | 183 | two-plantings: Plant Apr 22 and again by Aug 19; both mature before Oct 22. | Aug 19 |
| Cosmos | Apr 8 | May 6–May 20 | 148 | two-plantings: Plant May 6 and again by Jul 19; both mature before Oct 1. | Jul 19 |
| Lavender | Feb 11 | May 6–May 20 | 183 | fits: 90 days to maturity, 183 available after May 6. | — |
| Marigolds | Mar 25 | May 6–May 13 | 148 | two-plantings: Plant May 6 and again by Jul 29; both mature before Oct 1. | Jul 29 |
| Melons | Apr 22 | May 20–May 27 | 120 | fits: 85 days to maturity, 120 available after May 20. | Jun 10 |
| Mint | — | May 6–May 20 | 183 | fits: 90 days to maturity, 183 available after May 6. | — |
| Nasturtiums | Apr 8 | May 6–May 13 | 148 | two-plantings: Plant May 6 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Pole Beans | — | May 13–May 27 | 141 | fits: 65 days to maturity, 141 available after May 13. | Jul 14 |
| Spaghetti Squash | Apr 22 | May 20–May 27 | 127 | fits: 90 days to maturity, 127 available after May 20. | Jun 12 |
| Sunflowers | — | May 6–May 20 | 148 | fits: 70 days to maturity, 148 available after May 6. | Jul 9 |
| Tomatillos | Mar 11 | May 13–May 20 | 127 | fits: 75 days to maturity, 127 available after May 13. | Jun 20 |
| Watermelon | Apr 22 | May 13–May 20 | 127 | fits: 80 days to maturity, 127 available after May 13. | Jun 15 |
| Yellow Squash | Apr 22 | May 20–May 27 | 134 | two-plantings: Plant May 20 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Zinnias | Apr 8 | May 6–May 20 | 148 | two-plantings: Plant May 6 and again by Jul 19; both mature before Oct 1. | Jul 19 |
Month by month in Grants Pass
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 11), Lavender (Feb 11), Onion (Feb 11), Rosemary (Feb 11), Celery (Feb 25), Collards (Feb 25), +5 more. |
| March | Start indoors: Broccoli (Mar 11), Brussel Sprouts (Mar 11), Cabbage (Mar 11), Lettuce (Mar 11), Sage (Mar 11), Swiss Chard (Mar 11), +6 more. Direct sow from: Arugula (Mar 11), Beets (Mar 11), Dill (Mar 11), Peas (Mar 11), Radish (Mar 11), Spinach (Mar 11), +1 more. |
| April | Start indoors: Basil (Apr 1), Tomato (Apr 1), Bok Choy (Apr 8), Corn (Apr 8), Cosmos (Apr 8), Nasturtiums (Apr 8), +11 more. Direct sow from: Cilantro (Apr 8), Turnip (Apr 8), Carrots (Apr 15), Potatoes (Apr 22). Transplant from: Broccoli (Apr 8), Brussel Sprouts (Apr 8), Cabbage (Apr 8), Collards (Apr 8), Kale (Apr 8), Lettuce (Apr 8), +6 more. Plant: Strawberry (Apr 1). |
| May | Direct sow from: Sunflowers (May 6), Beans (May 13), Pole Beans (May 13). Transplant from: Cosmos (May 6), Lavender (May 6), Marigolds (May 6), Mint (May 6), Nasturtiums (May 6), Zinnias (May 6), +23 more. Last frost around May 6. |
| June | Last sowing dates: Butternut Squash (Jun 2), Pumpkin (Jun 2), Cantaloupe (Jun 10), Celery (Jun 10), Melons (Jun 10), Spaghetti Squash (Jun 12), +6 more. |
| July | Last sowing dates: Sunflowers (Jul 9), Brussel Sprouts (Jul 14), Pole Beans (Jul 14), Basil (Jul 19), Cosmos (Jul 19), Cucumber (Jul 19), +10 more. |
| August | Last sowing dates: Peas (Aug 4), Cabbage (Aug 13), Carrots (Aug 13), Beets (Aug 14), Dill (Aug 14), Swiss Chard (Aug 14), +8 more. |
| September | Last sowing dates: Turnip (Sep 2), Arugula (Sep 12), Spinach (Sep 12), Radish (Sep 13). |
| October | Direct sow from: Garlic (Oct 15). First frost around October 15. |
| November | Last sowing dates: Garlic (Nov 5). |
| 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 Grants Pass, OR (ZIP 97527)?
The median last spring frost date for Grants Pass, OR (ZIP code 97527) is around May 6. 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 16; one in ten it runs past May 27.
What is the first fall frost date in Grants Pass, OR?
The median first fall frost date for Grants Pass, OR is around October 15. 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 23 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Grants Pass, OR?
The frost-free growing season in Grants Pass is about 162 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 Grants Pass (162 frost-free days, a moderate season), 31 of 56 planner crops fit outright, 24 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Grants Pass, OR?
Grants Pass, OR is in USDA hardiness zone 8b (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 Grants Pass, OR?
Start tomatoes indoors Apr 1 and plant out May 20 in Grants Pass. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Grants Pass?
Two: plant Apr 8 and again by Aug 24; both mature before Oct 22.
When do I plant garlic in Grants Pass?
Oct 15 to Nov 5; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Brookings (ZIP 97415) has 301 frost-free days, 139 more than Grants Pass (ZIP 97527). See Brookings ZIP 97415 frost dates
Nearby and related
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