Frost Dates for Keystone Heights, FL 32656
Last spring frost February 11 · First fall frost December 18 · 310 frost-free days · USDA Zone 9a
ZIP 32656 has about 15,800 people.
Very long season: 310 frost-free days. Spring frost risk spans January 15–March 9 (53 days). Fall frost risk spans November 19–February 4 (77 days).
Frost probability for 32656
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 9 | February 11 | January 15 |
| Fall (first frost) | November 19 | December 18 | February 4 |
Dates come from NOAA 1971–2000 freeze probabilities at PALATKA (34.7 km away); the 50% date is the median year.
Which crops fit a 310-day season in Keystone Heights
In Keystone Heights (310 frost-free days, a very 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 | Jan 7 | Feb 25–Mar 4 | 268 | fits: 80 days to maturity, 268 available after Feb 25. | Aug 18 |
| Pepper | Dec 31 | Feb 25–Mar 4 | 268 | fits: 75 days to maturity, 268 available after Feb 25. | Aug 23 |
| Lettuce | Dec 17 | Jan 14–Jan 21 | 345 | two-plantings: Plant Jan 14 and again by Oct 27; both mature before Dec 25. | Oct 27 |
| Carrots | — | Jan 21–Jan 28 | 352 | fits: 70 days to maturity, 352 available after Jan 21. | Oct 16 |
| Cucumber | Jan 21 | Feb 25–Mar 4 | 282 | two-plantings: Plant Feb 25 and again by Sep 21; both mature before Dec 4. | Sep 21 |
| Beans | — | Feb 18–Mar 4 | 296 | two-plantings: Plant Feb 18 and again by Sep 28; both mature before Dec 11. | Sep 28 |
| Peas | — | Dec 17–Feb 25 | 373 | fits: 65 days to maturity, 373 available after Dec 17. | Oct 7 |
| Zucchini | Jan 28 | Feb 25–Mar 4 | 282 | two-plantings: Plant Feb 25 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Onion | Nov 19 | Jan 14–Jan 28 | 345 | fits: 100 days to maturity, 345 available after Jan 14. | — |
| Spinach | — | Dec 17–Feb 4 | 387 | two-plantings: Plant Dec 17 and again by Nov 15; both mature before Jan 8. | Nov 15 |
| Kale | Dec 3 | Jan 14–Jan 28 | 359 | two-plantings: Plant Jan 14 and again by Oct 31; both mature before Jan 8. | Oct 31 |
| Broccoli | Dec 17 | Jan 14–Jan 28 | 345 | fits: 80 days to maturity, 345 available after Jan 14. | Sep 22 |
| Cabbage | Dec 17 | Jan 14–Jan 28 | 359 | fits: 70 days to maturity, 359 available after Jan 14. | Oct 16 |
| Radish | — | Dec 17–Mar 11 | 373 | two-plantings: Plant Dec 17 and again by Nov 16; both mature before Dec 25. | Nov 16 |
| Beets | — | Dec 17–Mar 11 | 373 | two-plantings: Plant Dec 17 and again by Oct 17; both mature before Dec 25. | Oct 17 |
| Potatoes | — | Jan 28–Feb 4 | 331 | fits: 90 days to maturity, 331 available after Jan 28. | — |
| Garlic | — | Dec 18 | 415 | overwinter: Plant Dec 18 to Jan 8; harvest the following summer. | Jan 8 |
| Strawberry | — | Jan 7–Mar 4 | 366 | perennial: A perennial: plant Jan 7; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 14 | Feb 18–Feb 25 | 282 | fits: 75 days to maturity, 282 available after Feb 18. | Aug 30 |
| Pumpkin | Jan 28 | Feb 25–Feb 25 | 275 | fits: 100 days to maturity, 275 available after Feb 25. | Aug 5 |
| Cauliflower | Dec 31 | Feb 4–Feb 18 | 324 | fits: 75 days to maturity, 324 available after Feb 4. | Sep 27 |
| Swiss Chard | Dec 17 | Jan 28–Jan 28 | 331 | two-plantings: Plant Jan 28 and again by Oct 17; both mature before Dec 25. | Oct 17 |
| Arugula | — | Dec 17–Mar 11 | 387 | two-plantings: Plant Dec 17 and again by Nov 15; both mature before Jan 8. | Nov 15 |
| Brussel Sprouts | Dec 17 | Jan 14–Jan 28 | 359 | fits: 100 days to maturity, 359 available after Jan 14. | Sep 16 |
| Butternut Squash | Jan 28 | Feb 25–Mar 4 | 275 | fits: 100 days to maturity, 275 available after Feb 25. | Aug 5 |
| Eggplant | Dec 24 | Feb 25–Mar 4 | 268 | fits: 70 days to maturity, 268 available after Feb 25. | Aug 28 |
| Okra | Jan 14 | Feb 18–Feb 25 | 289 | two-plantings: Plant Feb 18 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Basil | Jan 7 | Mar 4–Mar 4 | 275 | two-plantings: Plant Mar 4 and again by Sep 21; both mature before Dec 4. | Sep 21 |
| Cilantro | — | Jan 14–Feb 4 | 345 | two-plantings: Plant Jan 14 and again by Oct 22; both mature before Dec 25. | Oct 22 |
| Parsley | Dec 3 | Feb 18–Feb 25 | 310 | fits: 70 days to maturity, 310 available after Feb 18. | Oct 2 |
| Celery | Dec 3 | Feb 18–Mar 4 | 310 | fits: 120 days to maturity, 310 available after Feb 18. | Aug 13 |
| Scallions | Dec 3 | Jan 14–Jan 28 | 359 | two-plantings: Plant Jan 14 and again by Oct 26; both mature before Jan 8. | Oct 26 |
| Turnip | — | Jan 14–Jan 28 | 359 | two-plantings: Plant Jan 14 and again by Nov 5; both mature before Jan 8. | Nov 5 |
| Kohlrabi | — | Dec 31–Jan 14 | 373 | two-plantings: Plant Dec 31 and again by Oct 31; both mature before Jan 8. | Oct 31 |
| Bok Choy | Jan 14 | Feb 4–Feb 11 | 324 | two-plantings: Plant Feb 4 and again by Oct 27; both mature before Dec 25. | Oct 27 |
| Collards | Dec 3 | Jan 14–Jan 28 | 359 | two-plantings: Plant Jan 14 and again by Oct 26; both mature before Jan 8. | Oct 26 |
| Cantaloupe | Jan 28 | Feb 25–Mar 4 | 268 | fits: 85 days to maturity, 268 available after Feb 25. | Aug 13 |
| Chives | Nov 19 | Feb 18–Feb 25 | 324 | fits: 90 days to maturity, 324 available after Feb 18. | — |
| Dill | — | Dec 17–Mar 11 | 373 | two-plantings: Plant Dec 17 and again by Oct 17; both mature before Dec 25. | Oct 17 |
| Oregano | Dec 3 | Feb 18–Feb 25 | 324 | fits: 80 days to maturity, 324 available after Feb 18. | — |
| Rosemary | Nov 19 | Feb 18–Feb 25 | 310 | fits: 80 days to maturity, 310 available after Feb 18. | — |
| Sage | Dec 17 | Feb 18–Feb 25 | 324 | fits: 75 days to maturity, 324 available after Feb 18. | — |
| Thyme | Dec 3 | Feb 18–Feb 25 | 324 | fits: 90 days to maturity, 324 available after Feb 18. | — |
| Calendula | Dec 31 | Jan 28–Feb 11 | 331 | two-plantings: Plant Jan 28 and again by Oct 22; both mature before Dec 25. | Oct 22 |
| Cosmos | Jan 14 | Feb 11–Feb 25 | 296 | two-plantings: Plant Feb 11 and again by Sep 21; both mature before Dec 4. | Sep 21 |
| Lavender | Nov 19 | Feb 11–Feb 25 | 331 | fits: 90 days to maturity, 331 available after Feb 11. | — |
| Marigolds | Dec 31 | Feb 11–Feb 18 | 296 | two-plantings: Plant Feb 11 and again by Oct 1; both mature before Dec 4. | Oct 1 |
| Melons | Jan 28 | Feb 25–Mar 4 | 268 | fits: 85 days to maturity, 268 available after Feb 25. | Aug 13 |
| Mint | — | Feb 11–Feb 25 | 331 | fits: 90 days to maturity, 331 available after Feb 11. | — |
| Nasturtiums | Jan 14 | Feb 11–Feb 18 | 296 | two-plantings: Plant Feb 11 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Pole Beans | — | Feb 18–Mar 4 | 289 | fits: 65 days to maturity, 289 available after Feb 18. | Sep 16 |
| Spaghetti Squash | Jan 28 | Feb 25–Mar 4 | 275 | fits: 90 days to maturity, 275 available after Feb 25. | Aug 15 |
| Sunflowers | — | Feb 11–Feb 25 | 296 | fits: 70 days to maturity, 296 available after Feb 11. | Sep 11 |
| Tomatillos | Dec 17 | Feb 18–Feb 25 | 275 | fits: 75 days to maturity, 275 available after Feb 18. | Aug 23 |
| Watermelon | Jan 28 | Feb 18–Feb 25 | 275 | fits: 80 days to maturity, 275 available after Feb 18. | Aug 18 |
| Yellow Squash | Jan 28 | Feb 25–Mar 4 | 282 | two-plantings: Plant Feb 25 and again by Sep 26; both mature before Dec 4. | Sep 26 |
| Zinnias | Jan 14 | Feb 11–Feb 25 | 296 | two-plantings: Plant Feb 11 and again by Sep 21; both mature before Dec 4. | Sep 21 |
Month by month in Keystone Heights
| Month | What to do |
|---|---|
| January | Start indoors: Basil (Jan 7), Tomato (Jan 7), Bok Choy (Jan 14), Corn (Jan 14), Cosmos (Jan 14), Nasturtiums (Jan 14), +11 more. Direct sow from: Cilantro (Jan 14), Turnip (Jan 14), Carrots (Jan 21), Potatoes (Jan 28). Transplant from: Broccoli (Jan 14), Brussel Sprouts (Jan 14), Cabbage (Jan 14), Collards (Jan 14), Kale (Jan 14), Lettuce (Jan 14), +4 more. Plant: Strawberry (Jan 7). Last sowing dates: Garlic (Jan 8). |
| February | Direct sow from: Sunflowers (Feb 11), Beans (Feb 18), Pole Beans (Feb 18). Transplant from: Bok Choy (Feb 4), Cauliflower (Feb 4), Cosmos (Feb 11), Lavender (Feb 11), Marigolds (Feb 11), Mint (Feb 11), +24 more. Last frost around February 11. |
| March | Transplant from: Basil (Mar 4). |
| April | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| May | Harvest regularly to encourage production. Monitor for pests and disease. |
| June | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| July | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| August | Last sowing dates: Butternut Squash (Aug 5), Pumpkin (Aug 5), Cantaloupe (Aug 13), Celery (Aug 13), Melons (Aug 13), Spaghetti Squash (Aug 15), +6 more. |
| September | Last sowing dates: Sunflowers (Sep 11), Brussel Sprouts (Sep 16), Pole Beans (Sep 16), Basil (Sep 21), Cosmos (Sep 21), Cucumber (Sep 21), +8 more. |
| October | Last sowing dates: Marigolds (Oct 1), Parsley (Oct 2), Peas (Oct 7), Cabbage (Oct 16), Carrots (Oct 16), Beets (Oct 17), +10 more. |
| November | Start indoors: Chives (Nov 19), Lavender (Nov 19), Onion (Nov 19), Rosemary (Nov 19). Last sowing dates: Turnip (Nov 5), Arugula (Nov 15), Spinach (Nov 15), Radish (Nov 16). |
| December | Start indoors: Celery (Dec 3), Collards (Dec 3), Kale (Dec 3), Oregano (Dec 3), Parsley (Dec 3), Scallions (Dec 3), +13 more. Direct sow from: Arugula (Dec 17), Beets (Dec 17), Dill (Dec 17), Peas (Dec 17), Radish (Dec 17), Spinach (Dec 17), +2 more. First frost around December 18. |
Frequently Asked Questions
What is the last frost date for Keystone Heights, FL (ZIP 32656)?
The median last spring frost date for Keystone Heights, FL (ZIP code 32656) is around February 11. 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 January 15; one in ten it runs past March 9.
What is the first fall frost date in Keystone Heights, FL?
The median first fall frost date for Keystone Heights, FL is around December 18. 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 November 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Keystone Heights, FL?
The frost-free growing season in Keystone Heights is about 310 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 Keystone Heights (310 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Keystone Heights, FL?
Keystone Heights, FL 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 Keystone Heights, FL?
Start tomatoes indoors Jan 7 and plant out Feb 25 in Keystone Heights. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Keystone Heights?
Two: plant Jan 14 and again by Oct 27; both mature before Dec 25.
When do I plant garlic in Keystone Heights?
Dec 18 to Jan 8; it overwinters and is ready the following summer.
Can I get two tomato crops in Keystone Heights?
Yes: plant out Feb 25 for a summer crop, and set out a second round of transplants by Aug 18 for a fall crop.
Which nearby ZIP has a longer season?
Green Cove Springs (ZIP 32043) has 326 frost-free days, 16 more than Keystone Heights (ZIP 32656). See Green Cove Springs ZIP 32043 frost dates
Nearby and related
- Frost dates for Starke, FL 32091 (12.1 mi)
- Frost dates for Green Cove Springs, FL 32043 (14.5 mi)
- Frost dates for Interlachen, FL 32148 (16.1 mi)
- Frost dates for Palatka, FL 32177 (17.5 mi)
- Frost dates for Middleburg, FL 32068 (18.2 mi)
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