Frost Dates for Ashtabula, OH 44004
Last spring frost May 15 · First fall frost October 5 · 143 frost-free days · USDA Zone 6b
ZIP 44004 has about 31,100 people.
Moderate season: 143 frost-free days. Spring frost risk spans April 30–May 29 (29 days). Fall frost risk spans September 18–October 21 (33 days).
Frost probability for 44004
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 29 | May 15 | April 30 |
| Fall (first frost) | September 18 | October 5 | October 21 |
Dates come from NOAA 1971–2000 freeze probabilities at JAMESTOWN 2 NW (47.4 km away); the 50% date is the median year.
Which crops fit a 143-day season in Ashtabula
In Ashtabula (143 frost-free days, a moderate season), 38 of 56 planner crops fit outright, 17 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 10 | May 29–Jun 5 | 101 | fits: 80 days to maturity, 101 available after May 29. | Jun 5 |
| Pepper | Apr 3 | May 29–Jun 5 | 101 | fits: 75 days to maturity, 101 available after May 29. | Jun 10 |
| Lettuce | Mar 20 | Apr 17–Apr 24 | 178 | two-plantings: Plant Apr 17 and again by Aug 14; both mature before Oct 12. | Aug 14 |
| Carrots | — | Apr 24–May 1 | 185 | fits: 70 days to maturity, 185 available after Apr 24. | Aug 3 |
| Cucumber | Apr 24 | May 29–Jun 5 | 115 | fits: 60 days to maturity, 115 available after May 29. | Jul 9 |
| Beans | — | May 22–Jun 5 | 129 | fits: 60 days to maturity, 129 available after May 22. | Jul 16 |
| Peas | — | Mar 20–May 29 | 206 | fits: 65 days to maturity, 206 available after Mar 20. | Jul 25 |
| Zucchini | May 1 | May 29–Jun 5 | 115 | fits: 55 days to maturity, 115 available after May 29. | Jul 14 |
| Onion | Feb 20 | Apr 17–May 1 | 178 | fits: 100 days to maturity, 178 available after Apr 17. | — |
| Spinach | — | Mar 20–May 8 | 220 | two-plantings: Plant Mar 20 and again by Sep 2; both mature before Oct 26. | Sep 2 |
| Kale | Mar 6 | Apr 17–May 1 | 192 | two-plantings: Plant Apr 17 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Broccoli | Mar 20 | Apr 17–May 1 | 178 | fits: 80 days to maturity, 178 available after Apr 17. | Jul 10 |
| Cabbage | Mar 20 | Apr 17–May 1 | 192 | fits: 70 days to maturity, 192 available after Apr 17. | Aug 3 |
| Radish | — | Mar 20–Jun 12 | 206 | two-plantings: Plant Mar 20 and again by Sep 3; both mature before Oct 12. | Sep 3 |
| Beets | — | Mar 20–Jun 12 | 206 | two-plantings: Plant Mar 20 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Potatoes | — | May 1–May 8 | 164 | fits: 90 days to maturity, 164 available after May 1. | — |
| Garlic | — | Oct 5 | 248 | overwinter: Plant Oct 5 to Oct 26; harvest the following summer. | Oct 26 |
| Strawberry | — | Apr 10–Jun 5 | 199 | 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 | 115 | fits: 75 days to maturity, 115 available after May 22. | Jun 17 |
| Pumpkin | May 1 | May 29–May 29 | 108 | fits: 100 days to maturity, 108 available after May 29. | — |
| Cauliflower | Apr 3 | May 8–May 22 | 157 | fits: 75 days to maturity, 157 available after May 8. | Jul 15 |
| Swiss Chard | Mar 20 | May 1–May 1 | 164 | two-plantings: Plant May 1 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Arugula | — | Mar 20–Jun 12 | 220 | two-plantings: Plant Mar 20 and again by Sep 2; both mature before Oct 26. | Sep 2 |
| Brussel Sprouts | Mar 20 | Apr 17–May 1 | 192 | fits: 100 days to maturity, 192 available after Apr 17. | Jul 4 |
| Butternut Squash | May 1 | May 29–Jun 5 | 108 | fits: 100 days to maturity, 108 available after May 29. | — |
| Eggplant | Mar 27 | May 29–Jun 5 | 101 | fits: 70 days to maturity, 101 available after May 29. | Jun 15 |
| Okra | Apr 17 | May 22–May 29 | 122 | fits: 55 days to maturity, 122 available after May 22. | Jul 14 |
| Basil | Apr 10 | Jun 5–Jun 5 | 108 | fits: 60 days to maturity, 108 available after Jun 5. | Jul 9 |
| Cilantro | — | Apr 17–May 8 | 178 | two-plantings: Plant Apr 17 and again by Aug 9; both mature before Oct 12. | Aug 9 |
| Parsley | Mar 6 | May 22–May 29 | 143 | fits: 70 days to maturity, 143 available after May 22. | Jul 20 |
| Celery | Mar 6 | May 22–Jun 5 | 143 | fits: 120 days to maturity, 143 available after May 22. | May 31 |
| Scallions | Mar 6 | Apr 17–May 1 | 192 | two-plantings: Plant Apr 17 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Turnip | — | Apr 17–May 1 | 192 | two-plantings: Plant Apr 17 and again by Aug 23; both mature before Oct 26. | Aug 23 |
| Kohlrabi | — | Apr 3–Apr 17 | 206 | two-plantings: Plant Apr 3 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Bok Choy | Apr 17 | May 8–May 15 | 157 | two-plantings: Plant May 8 and again by Aug 14; both mature before Oct 12. | Aug 14 |
| Collards | Mar 6 | Apr 17–May 1 | 192 | two-plantings: Plant Apr 17 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Cantaloupe | May 1 | May 29–Jun 5 | 101 | fits: 85 days to maturity, 101 available after May 29. | May 31 |
| Chives | Feb 20 | May 22–May 29 | 157 | fits: 90 days to maturity, 157 available after May 22. | — |
| Dill | — | Mar 20–Jun 12 | 206 | two-plantings: Plant Mar 20 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Oregano | Mar 6 | May 22–May 29 | 157 | fits: 80 days to maturity, 157 available after May 22. | — |
| Rosemary | Feb 20 | May 22–May 29 | 143 | fits: 80 days to maturity, 143 available after May 22. | — |
| Sage | Mar 20 | May 22–May 29 | 157 | fits: 75 days to maturity, 157 available after May 22. | — |
| Thyme | Mar 6 | May 22–May 29 | 157 | fits: 90 days to maturity, 157 available after May 22. | — |
| Calendula | Apr 3 | May 1–May 15 | 164 | two-plantings: Plant May 1 and again by Aug 9; both mature before Oct 12. | Aug 9 |
| Cosmos | Apr 17 | May 15–May 29 | 129 | fits: 60 days to maturity, 129 available after May 15. | Jul 9 |
| Lavender | Feb 20 | May 15–May 29 | 164 | fits: 90 days to maturity, 164 available after May 15. | — |
| Marigolds | Apr 3 | May 15–May 22 | 129 | two-plantings: Plant May 15 and again by Jul 19; both mature before Sep 21. | Jul 19 |
| Melons | May 1 | May 29–Jun 5 | 101 | fits: 85 days to maturity, 101 available after May 29. | May 31 |
| Mint | — | May 15–May 29 | 164 | fits: 90 days to maturity, 164 available after May 15. | — |
| Nasturtiums | Apr 17 | May 15–May 22 | 129 | two-plantings: Plant May 15 and again by Jul 14; both mature before Sep 21. | Jul 14 |
| Pole Beans | — | May 22–Jun 5 | 122 | fits: 65 days to maturity, 122 available after May 22. | Jul 4 |
| Spaghetti Squash | May 1 | May 29–Jun 5 | 108 | fits: 90 days to maturity, 108 available after May 29. | Jun 2 |
| Sunflowers | — | May 15–May 29 | 129 | fits: 70 days to maturity, 129 available after May 15. | Jun 29 |
| Tomatillos | Mar 20 | May 22–May 29 | 108 | fits: 75 days to maturity, 108 available after May 22. | Jun 10 |
| Watermelon | May 1 | May 22–May 29 | 108 | fits: 80 days to maturity, 108 available after May 22. | Jun 5 |
| Yellow Squash | May 1 | May 29–Jun 5 | 115 | fits: 55 days to maturity, 115 available after May 29. | Jul 14 |
| Zinnias | Apr 17 | May 15–May 29 | 129 | fits: 60 days to maturity, 129 available after May 15. | Jul 9 |
Month by month in Ashtabula
| 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: Cantaloupe (May 31), Celery (May 31), Melons (May 31). |
| June | Transplant from: Basil (Jun 5). Last sowing dates: Spaghetti Squash (Jun 2), Tomato (Jun 5), Watermelon (Jun 5), Pepper (Jun 10), Tomatillos (Jun 10), Eggplant (Jun 15), +2 more. |
| July | Last sowing dates: Brussel Sprouts (Jul 4), Pole Beans (Jul 4), Basil (Jul 9), Cosmos (Jul 9), Cucumber (Jul 9), Zinnias (Jul 9), +10 more. |
| August | Last sowing dates: Cabbage (Aug 3), Carrots (Aug 3), Beets (Aug 4), Dill (Aug 4), Swiss Chard (Aug 4), Calendula (Aug 9), +8 more. |
| September | Last sowing dates: Arugula (Sep 2), Spinach (Sep 2), Radish (Sep 3). |
| October | Direct sow from: Garlic (Oct 5). First frost around October 5. Last sowing dates: Garlic (Oct 26). |
| November | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
| 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 Ashtabula, OH (ZIP 44004)?
The median last spring frost date for Ashtabula, OH (ZIP code 44004) 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 30; one in ten it runs past May 29.
What is the first fall frost date in Ashtabula, OH?
The median first fall frost date for Ashtabula, OH is around October 5. 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 18 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Ashtabula, OH?
The frost-free growing season in Ashtabula is about 143 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 Ashtabula (143 frost-free days, a moderate season), 38 of 56 planner crops fit outright, 17 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Ashtabula, OH?
Ashtabula, OH 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 Ashtabula, OH?
Start tomatoes indoors Apr 10 and plant out May 29 in Ashtabula. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Ashtabula?
Two: plant Apr 17 and again by Aug 14; both mature before Oct 12.
When do I plant garlic in Ashtabula?
Oct 5 to Oct 26; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Painesville (ZIP 44077) has 174 frost-free days, 31 more than Ashtabula (ZIP 44004). See Painesville ZIP 44077 frost dates
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