Frost Dates for Florence, OR 97439
Last spring frost March 30 · First fall frost November 21 · 236 frost-free days · USDA Zone 9a
ZIP 97439 has about 16,000 people.
Long season: 236 frost-free days. Spring frost risk spans February 24–May 4 (69 days). Fall frost risk spans October 19–December 8 (50 days).
Frost probability for 97439
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 4 | March 30 | February 24 |
| Fall (first frost) | October 19 | November 21 | December 8 |
Dates come from NOAA 1971–2000 freeze probabilities at HONEYMAN SP (16.3 km away); the 50% date is the median year.
Which crops fit a 236-day season in Florence
In Florence (236 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Feb 23 | Apr 13–Apr 20 | 194 | fits: 80 days to maturity, 194 available after Apr 13. | Jul 22 |
| Pepper | Feb 16 | Apr 13–Apr 20 | 194 | fits: 75 days to maturity, 194 available after Apr 13. | Jul 27 |
| Lettuce | Feb 2 | Mar 2–Mar 9 | 271 | two-plantings: Plant Mar 2 and again by Sep 30; both mature before Nov 28. | Sep 30 |
| Carrots | — | Mar 9–Mar 16 | 278 | fits: 70 days to maturity, 278 available after Mar 9. | Sep 19 |
| Cucumber | Mar 9 | Apr 13–Apr 20 | 208 | two-plantings: Plant Apr 13 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Beans | — | Apr 6–Apr 20 | 222 | two-plantings: Plant Apr 6 and again by Sep 1; both mature before Nov 14. | Sep 1 |
| Peas | — | Feb 2–Apr 13 | 299 | fits: 65 days to maturity, 299 available after Feb 2. | Sep 10 |
| Zucchini | Mar 16 | Apr 13–Apr 20 | 208 | two-plantings: Plant Apr 13 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Onion | Jan 5 | Mar 2–Mar 16 | 271 | fits: 100 days to maturity, 271 available after Mar 2. | — |
| Spinach | — | Feb 2–Mar 23 | 313 | two-plantings: Plant Feb 2 and again by Oct 19; both mature before Dec 12. | Oct 19 |
| Kale | Jan 19 | Mar 2–Mar 16 | 285 | two-plantings: Plant Mar 2 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Broccoli | Feb 2 | Mar 2–Mar 16 | 271 | fits: 80 days to maturity, 271 available after Mar 2. | Aug 26 |
| Cabbage | Feb 2 | Mar 2–Mar 16 | 285 | fits: 70 days to maturity, 285 available after Mar 2. | Sep 19 |
| Radish | — | Feb 2–Apr 27 | 299 | two-plantings: Plant Feb 2 and again by Oct 20; both mature before Nov 28. | Oct 20 |
| Beets | — | Feb 2–Apr 27 | 299 | two-plantings: Plant Feb 2 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Potatoes | — | Mar 16–Mar 23 | 257 | fits: 90 days to maturity, 257 available after Mar 16. | — |
| Garlic | — | Nov 21 | 341 | overwinter: Plant Nov 21 to Dec 12; harvest the following summer. | Dec 12 |
| Strawberry | — | Feb 23–Apr 20 | 292 | perennial: A perennial: plant Feb 23; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 2 | Apr 6–Apr 13 | 208 | fits: 75 days to maturity, 208 available after Apr 6. | Aug 3 |
| Pumpkin | Mar 16 | Apr 13–Apr 13 | 201 | fits: 100 days to maturity, 201 available after Apr 13. | Jul 9 |
| Cauliflower | Feb 16 | Mar 23–Apr 6 | 250 | fits: 75 days to maturity, 250 available after Mar 23. | Aug 31 |
| Swiss Chard | Feb 2 | Mar 16–Mar 16 | 257 | two-plantings: Plant Mar 16 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Arugula | — | Feb 2–Apr 27 | 313 | two-plantings: Plant Feb 2 and again by Oct 19; both mature before Dec 12. | Oct 19 |
| Brussel Sprouts | Feb 2 | Mar 2–Mar 16 | 285 | fits: 100 days to maturity, 285 available after Mar 2. | Aug 20 |
| Butternut Squash | Mar 16 | Apr 13–Apr 20 | 201 | fits: 100 days to maturity, 201 available after Apr 13. | Jul 9 |
| Eggplant | Feb 9 | Apr 13–Apr 20 | 194 | fits: 70 days to maturity, 194 available after Apr 13. | Aug 1 |
| Okra | Mar 2 | Apr 6–Apr 13 | 215 | two-plantings: Plant Apr 6 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Basil | Feb 23 | Apr 20–Apr 20 | 201 | two-plantings: Plant Apr 20 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Cilantro | — | Mar 2–Mar 23 | 271 | two-plantings: Plant Mar 2 and again by Sep 25; both mature before Nov 28. | Sep 25 |
| Parsley | Jan 19 | Apr 6–Apr 13 | 236 | fits: 70 days to maturity, 236 available after Apr 6. | Sep 5 |
| Celery | Jan 19 | Apr 6–Apr 20 | 236 | fits: 120 days to maturity, 236 available after Apr 6. | Jul 17 |
| Scallions | Jan 19 | Mar 2–Mar 16 | 285 | two-plantings: Plant Mar 2 and again by Sep 29; both mature before Dec 12. | Sep 29 |
| Turnip | — | Mar 2–Mar 16 | 285 | two-plantings: Plant Mar 2 and again by Oct 9; both mature before Dec 12. | Oct 9 |
| Kohlrabi | — | Feb 16–Mar 2 | 299 | two-plantings: Plant Feb 16 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Bok Choy | Mar 2 | Mar 23–Mar 30 | 250 | two-plantings: Plant Mar 23 and again by Sep 30; both mature before Nov 28. | Sep 30 |
| Collards | Jan 19 | Mar 2–Mar 16 | 285 | two-plantings: Plant Mar 2 and again by Sep 29; both mature before Dec 12. | Sep 29 |
| Cantaloupe | Mar 16 | Apr 13–Apr 20 | 194 | fits: 85 days to maturity, 194 available after Apr 13. | Jul 17 |
| Chives | Jan 5 | Apr 6–Apr 13 | 250 | fits: 90 days to maturity, 250 available after Apr 6. | — |
| Dill | — | Feb 2–Apr 27 | 299 | two-plantings: Plant Feb 2 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Oregano | Jan 19 | Apr 6–Apr 13 | 250 | fits: 80 days to maturity, 250 available after Apr 6. | — |
| Rosemary | Jan 5 | Apr 6–Apr 13 | 236 | fits: 80 days to maturity, 236 available after Apr 6. | — |
| Sage | Feb 2 | Apr 6–Apr 13 | 250 | fits: 75 days to maturity, 250 available after Apr 6. | — |
| Thyme | Jan 19 | Apr 6–Apr 13 | 250 | fits: 90 days to maturity, 250 available after Apr 6. | — |
| Calendula | Feb 16 | Mar 16–Mar 30 | 257 | two-plantings: Plant Mar 16 and again by Sep 25; both mature before Nov 28. | Sep 25 |
| Cosmos | Mar 2 | Mar 30–Apr 13 | 222 | two-plantings: Plant Mar 30 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Lavender | Jan 5 | Mar 30–Apr 13 | 257 | fits: 90 days to maturity, 257 available after Mar 30. | — |
| Marigolds | Feb 16 | Mar 30–Apr 6 | 222 | two-plantings: Plant Mar 30 and again by Sep 4; both mature before Nov 7. | Sep 4 |
| Melons | Mar 16 | Apr 13–Apr 20 | 194 | fits: 85 days to maturity, 194 available after Apr 13. | Jul 17 |
| Mint | — | Mar 30–Apr 13 | 257 | fits: 90 days to maturity, 257 available after Mar 30. | — |
| Nasturtiums | Mar 2 | Mar 30–Apr 6 | 222 | two-plantings: Plant Mar 30 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Pole Beans | — | Apr 6–Apr 20 | 215 | fits: 65 days to maturity, 215 available after Apr 6. | Aug 20 |
| Spaghetti Squash | Mar 16 | Apr 13–Apr 20 | 201 | fits: 90 days to maturity, 201 available after Apr 13. | Jul 19 |
| Sunflowers | — | Mar 30–Apr 13 | 222 | fits: 70 days to maturity, 222 available after Mar 30. | Aug 15 |
| Tomatillos | Feb 2 | Apr 6–Apr 13 | 201 | fits: 75 days to maturity, 201 available after Apr 6. | Jul 27 |
| Watermelon | Mar 16 | Apr 6–Apr 13 | 201 | fits: 80 days to maturity, 201 available after Apr 6. | Jul 22 |
| Yellow Squash | Mar 16 | Apr 13–Apr 20 | 208 | two-plantings: Plant Apr 13 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Zinnias | Mar 2 | Mar 30–Apr 13 | 222 | two-plantings: Plant Mar 30 and again by Aug 25; both mature before Nov 7. | Aug 25 |
Month by month in Florence
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 5), Lavender (Jan 5), Onion (Jan 5), Rosemary (Jan 5), Celery (Jan 19), Collards (Jan 19), +5 more. |
| February | Start indoors: Broccoli (Feb 2), Brussel Sprouts (Feb 2), Cabbage (Feb 2), Lettuce (Feb 2), Sage (Feb 2), Swiss Chard (Feb 2), +8 more. Direct sow from: Arugula (Feb 2), Beets (Feb 2), Dill (Feb 2), Peas (Feb 2), Radish (Feb 2), Spinach (Feb 2), +1 more. Plant: Strawberry (Feb 23). |
| March | Start indoors: Bok Choy (Mar 2), Corn (Mar 2), Cosmos (Mar 2), Nasturtiums (Mar 2), Okra (Mar 2), Zinnias (Mar 2), +9 more. Direct sow from: Cilantro (Mar 2), Turnip (Mar 2), Carrots (Mar 9), Potatoes (Mar 16), Sunflowers (Mar 30). Transplant from: Broccoli (Mar 2), Brussel Sprouts (Mar 2), Cabbage (Mar 2), Collards (Mar 2), Kale (Mar 2), Lettuce (Mar 2), +12 more. Last frost around March 30. |
| April | Direct sow from: Beans (Apr 6), Pole Beans (Apr 6). Transplant from: Celery (Apr 6), Chives (Apr 6), Corn (Apr 6), Okra (Apr 6), Oregano (Apr 6), Parsley (Apr 6), +17 more. |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Harvest regularly to encourage production. Monitor for pests and disease. |
| July | Last sowing dates: Butternut Squash (Jul 9), Pumpkin (Jul 9), Cantaloupe (Jul 17), Celery (Jul 17), Melons (Jul 17), Spaghetti Squash (Jul 19), +4 more. |
| August | Last sowing dates: Eggplant (Aug 1), Corn (Aug 3), Sunflowers (Aug 15), Brussel Sprouts (Aug 20), Pole Beans (Aug 20), Basil (Aug 25), +9 more. |
| September | Last sowing dates: Beans (Sep 1), Marigolds (Sep 4), Parsley (Sep 5), Peas (Sep 10), Cabbage (Sep 19), Carrots (Sep 19), +9 more. |
| October | Last sowing dates: Kale (Oct 4), Kohlrabi (Oct 4), Turnip (Oct 9), Arugula (Oct 19), Spinach (Oct 19), Radish (Oct 20). |
| November | Direct sow from: Garlic (Nov 21). First frost around November 21. |
| December | Last sowing dates: Garlic (Dec 12). |
Frequently Asked Questions
What is the last frost date for Florence, OR (ZIP 97439)?
The median last spring frost date for Florence, OR (ZIP code 97439) is around March 30. 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 February 24; one in ten it runs past May 4.
What is the first fall frost date in Florence, OR?
The median first fall frost date for Florence, OR is around November 21. 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 October 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Florence, OR?
The frost-free growing season in Florence is about 236 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 Florence (236 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Florence, OR?
Florence, OR is in USDA hardiness zone 9a (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 Florence, OR?
Start tomatoes indoors Feb 23 and plant out Apr 13 in Florence. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Florence?
Two: plant Mar 2 and again by Sep 30; both mature before Nov 28.
When do I plant garlic in Florence?
Nov 21 to Dec 12; it overwinters and is ready the following summer.
Can I get two tomato crops in Florence?
Yes: plant out Apr 13 for a summer crop, and set out a second round of transplants by Jul 22 for a fall crop.
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