Frost Dates for Johnstown, OH 43031
Last spring frost May 1 · First fall frost October 11 · 163 frost-free days · USDA Zone 6a
ZIP 43031 has about 13,900 people.
Moderate season: 163 frost-free days. Spring frost risk spans April 15–May 17 (32 days). Fall frost risk spans October 1–October 26 (25 days).
Frost probability for 43031
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 17 | May 1 | April 15 |
| Fall (first frost) | October 1 | October 11 | October 26 |
Dates come from NOAA 1971–2000 freeze probabilities at CENTERBURG 2 SE (14.3 km away); the 50% date is the median year.
Which crops fit a 163-day season in Johnstown
In Johnstown (163 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 | Mar 27 | May 15–May 22 | 121 | fits: 80 days to maturity, 121 available after May 15. | Jun 11 |
| Pepper | Mar 20 | May 15–May 22 | 121 | fits: 75 days to maturity, 121 available after May 15. | Jun 16 |
| Lettuce | Mar 6 | Apr 3–Apr 10 | 198 | two-plantings: Plant Apr 3 and again by Aug 20; both mature before Oct 18. | Aug 20 |
| Carrots | — | Apr 10–Apr 17 | 205 | fits: 70 days to maturity, 205 available after Apr 10. | Aug 9 |
| Cucumber | Apr 10 | May 15–May 22 | 135 | two-plantings: Plant May 15 and again by Jul 15; both mature before Sep 27. | Jul 15 |
| Beans | — | May 8–May 22 | 149 | two-plantings: Plant May 8 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Peas | — | Mar 6–May 15 | 226 | fits: 65 days to maturity, 226 available after Mar 6. | Jul 31 |
| Zucchini | Apr 17 | May 15–May 22 | 135 | two-plantings: Plant May 15 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Onion | Feb 6 | Apr 3–Apr 17 | 198 | fits: 100 days to maturity, 198 available after Apr 3. | — |
| Spinach | — | Mar 6–Apr 24 | 240 | two-plantings: Plant Mar 6 and again by Sep 8; both mature before Nov 1. | Sep 8 |
| Kale | Feb 20 | Apr 3–Apr 17 | 212 | two-plantings: Plant Apr 3 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Broccoli | Mar 6 | Apr 3–Apr 17 | 198 | fits: 80 days to maturity, 198 available after Apr 3. | Jul 16 |
| Cabbage | Mar 6 | Apr 3–Apr 17 | 212 | fits: 70 days to maturity, 212 available after Apr 3. | Aug 9 |
| Radish | — | Mar 6–May 29 | 226 | two-plantings: Plant Mar 6 and again by Sep 9; both mature before Oct 18. | Sep 9 |
| Beets | — | Mar 6–May 29 | 226 | two-plantings: Plant Mar 6 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Potatoes | — | Apr 17–Apr 24 | 184 | fits: 90 days to maturity, 184 available after Apr 17. | — |
| Garlic | — | Oct 11 | 268 | overwinter: Plant Oct 11 to Nov 1; harvest the following summer. | Nov 1 |
| Strawberry | — | Mar 27–May 22 | 219 | perennial: A perennial: plant Mar 27; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 3 | May 8–May 15 | 135 | fits: 75 days to maturity, 135 available after May 8. | Jun 23 |
| Pumpkin | Apr 17 | May 15–May 15 | 128 | fits: 100 days to maturity, 128 available after May 15. | May 29 |
| Cauliflower | Mar 20 | Apr 24–May 8 | 177 | fits: 75 days to maturity, 177 available after Apr 24. | Jul 21 |
| Swiss Chard | Mar 6 | Apr 17–Apr 17 | 184 | two-plantings: Plant Apr 17 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Arugula | — | Mar 6–May 29 | 240 | two-plantings: Plant Mar 6 and again by Sep 8; both mature before Nov 1. | Sep 8 |
| Brussel Sprouts | Mar 6 | Apr 3–Apr 17 | 212 | fits: 100 days to maturity, 212 available after Apr 3. | Jul 10 |
| Butternut Squash | Apr 17 | May 15–May 22 | 128 | fits: 100 days to maturity, 128 available after May 15. | May 29 |
| Eggplant | Mar 13 | May 15–May 22 | 121 | fits: 70 days to maturity, 121 available after May 15. | Jun 21 |
| Okra | Apr 3 | May 8–May 15 | 142 | two-plantings: Plant May 8 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Basil | Mar 27 | May 22–May 22 | 128 | fits: 60 days to maturity, 128 available after May 22. | Jul 15 |
| Cilantro | — | Apr 3–Apr 24 | 198 | two-plantings: Plant Apr 3 and again by Aug 15; both mature before Oct 18. | Aug 15 |
| Parsley | Feb 20 | May 8–May 15 | 163 | fits: 70 days to maturity, 163 available after May 8. | Jul 26 |
| Celery | Feb 20 | May 8–May 22 | 163 | fits: 120 days to maturity, 163 available after May 8. | Jun 6 |
| Scallions | Feb 20 | Apr 3–Apr 17 | 212 | two-plantings: Plant Apr 3 and again by Aug 19; both mature before Nov 1. | Aug 19 |
| Turnip | — | Apr 3–Apr 17 | 212 | two-plantings: Plant Apr 3 and again by Aug 29; both mature before Nov 1. | Aug 29 |
| Kohlrabi | — | Mar 20–Apr 3 | 226 | two-plantings: Plant Mar 20 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Bok Choy | Apr 3 | Apr 24–May 1 | 177 | two-plantings: Plant Apr 24 and again by Aug 20; both mature before Oct 18. | Aug 20 |
| Collards | Feb 20 | Apr 3–Apr 17 | 212 | two-plantings: Plant Apr 3 and again by Aug 19; both mature before Nov 1. | Aug 19 |
| Cantaloupe | Apr 17 | May 15–May 22 | 121 | fits: 85 days to maturity, 121 available after May 15. | Jun 6 |
| Chives | Feb 6 | May 8–May 15 | 177 | fits: 90 days to maturity, 177 available after May 8. | — |
| Dill | — | Mar 6–May 29 | 226 | two-plantings: Plant Mar 6 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Oregano | Feb 20 | May 8–May 15 | 177 | fits: 80 days to maturity, 177 available after May 8. | — |
| Rosemary | Feb 6 | May 8–May 15 | 163 | fits: 80 days to maturity, 163 available after May 8. | — |
| Sage | Mar 6 | May 8–May 15 | 177 | fits: 75 days to maturity, 177 available after May 8. | — |
| Thyme | Feb 20 | May 8–May 15 | 177 | fits: 90 days to maturity, 177 available after May 8. | — |
| Calendula | Mar 20 | Apr 17–May 1 | 184 | two-plantings: Plant Apr 17 and again by Aug 15; both mature before Oct 18. | Aug 15 |
| Cosmos | Apr 3 | May 1–May 15 | 149 | two-plantings: Plant May 1 and again by Jul 15; both mature before Sep 27. | Jul 15 |
| Lavender | Feb 6 | May 1–May 15 | 184 | fits: 90 days to maturity, 184 available after May 1. | — |
| Marigolds | Mar 20 | May 1–May 8 | 149 | two-plantings: Plant May 1 and again by Jul 25; both mature before Sep 27. | Jul 25 |
| Melons | Apr 17 | May 15–May 22 | 121 | fits: 85 days to maturity, 121 available after May 15. | Jun 6 |
| Mint | — | May 1–May 15 | 184 | fits: 90 days to maturity, 184 available after May 1. | — |
| Nasturtiums | Apr 3 | May 1–May 8 | 149 | two-plantings: Plant May 1 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Pole Beans | — | May 8–May 22 | 142 | fits: 65 days to maturity, 142 available after May 8. | Jul 10 |
| Spaghetti Squash | Apr 17 | May 15–May 22 | 128 | fits: 90 days to maturity, 128 available after May 15. | Jun 8 |
| Sunflowers | — | May 1–May 15 | 149 | fits: 70 days to maturity, 149 available after May 1. | Jul 5 |
| Tomatillos | Mar 6 | May 8–May 15 | 128 | fits: 75 days to maturity, 128 available after May 8. | Jun 16 |
| Watermelon | Apr 17 | May 8–May 15 | 128 | fits: 80 days to maturity, 128 available after May 8. | Jun 11 |
| Yellow Squash | Apr 17 | May 15–May 22 | 135 | two-plantings: Plant May 15 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Zinnias | Apr 3 | May 1–May 15 | 149 | two-plantings: Plant May 1 and again by Jul 15; both mature before Sep 27. | Jul 15 |
Month by month in Johnstown
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 6), Lavender (Feb 6), Onion (Feb 6), Rosemary (Feb 6), Celery (Feb 20), Collards (Feb 20), +5 more. |
| March | Start indoors: Broccoli (Mar 6), Brussel Sprouts (Mar 6), Cabbage (Mar 6), Lettuce (Mar 6), Sage (Mar 6), Swiss Chard (Mar 6), +8 more. Direct sow from: Arugula (Mar 6), Beets (Mar 6), Dill (Mar 6), Peas (Mar 6), Radish (Mar 6), Spinach (Mar 6), +1 more. Plant: Strawberry (Mar 27). |
| April | Start indoors: Bok Choy (Apr 3), Corn (Apr 3), Cosmos (Apr 3), Nasturtiums (Apr 3), Okra (Apr 3), Zinnias (Apr 3), +9 more. Direct sow from: Cilantro (Apr 3), Turnip (Apr 3), Carrots (Apr 10), Potatoes (Apr 17). Transplant from: Broccoli (Apr 3), Brussel Sprouts (Apr 3), Cabbage (Apr 3), Collards (Apr 3), Kale (Apr 3), Lettuce (Apr 3), +6 more. |
| May | Direct sow from: Sunflowers (May 1), Beans (May 8), Pole Beans (May 8). Transplant from: Cosmos (May 1), Lavender (May 1), Marigolds (May 1), Mint (May 1), Nasturtiums (May 1), Zinnias (May 1), +23 more. Last frost around May 1. Last sowing dates: Butternut Squash (May 29), Pumpkin (May 29). |
| June | Last sowing dates: Cantaloupe (Jun 6), Celery (Jun 6), Melons (Jun 6), Spaghetti Squash (Jun 8), Tomato (Jun 11), Watermelon (Jun 11), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 5), Brussel Sprouts (Jul 10), Pole Beans (Jul 10), Basil (Jul 15), Cosmos (Jul 15), Cucumber (Jul 15), +11 more. |
| August | Last sowing dates: Cabbage (Aug 9), Carrots (Aug 9), Beets (Aug 10), Dill (Aug 10), Swiss Chard (Aug 10), Calendula (Aug 15), +8 more. |
| September | Last sowing dates: Arugula (Sep 8), Spinach (Sep 8), Radish (Sep 9). |
| October | Direct sow from: Garlic (Oct 11). First frost around October 11. |
| November | Last sowing dates: Garlic (Nov 1). |
| 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 Johnstown, OH (ZIP 43031)?
The median last spring frost date for Johnstown, OH (ZIP code 43031) is around May 1. 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 15; one in ten it runs past May 17.
What is the first fall frost date in Johnstown, OH?
The median first fall frost date for Johnstown, OH is around October 11. 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 1 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Johnstown, OH?
The frost-free growing season in Johnstown is about 163 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 Johnstown (163 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 Johnstown, OH?
Johnstown, OH is in USDA hardiness zone 6a (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 Johnstown, OH?
Start tomatoes indoors Mar 27 and plant out May 15 in Johnstown. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Johnstown?
Two: plant Apr 3 and again by Aug 20; both mature before Oct 18.
When do I plant garlic in Johnstown?
Oct 11 to Nov 1; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
New Albany (ZIP 43054) has 170 frost-free days, 7 more than Johnstown (ZIP 43031). See New Albany ZIP 43054 frost dates
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