Frost Dates for Oneonta, NY 13820
Last spring frost May 21 · First fall frost September 25 · 127 frost-free days · USDA Zone 5b
ZIP 13820 has about 23,100 people.
Moderate season: 127 frost-free days. Spring frost risk spans May 6–June 6 (31 days). Fall frost risk spans September 14–October 9 (25 days).
Frost probability for 13820
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 6 | May 21 | May 6 |
| Fall (first frost) | September 14 | September 25 | October 9 |
Dates come from NOAA 1971–2000 freeze probabilities at COOPERSTOWN (28.7 km away); the 50% date is the median year.
Which crops fit a 127-day season in Oneonta
In Oneonta (127 frost-free days, a moderate season), 38 of 56 planner crops fit outright, 15 get two plantings, 2 need an indoor start, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 16 | Jun 4–Jun 11 | 85 | fits: 80 days to maturity, 85 available after Jun 4. | — |
| Pepper | Apr 9 | Jun 4–Jun 11 | 85 | fits: 75 days to maturity, 85 available after Jun 4. | — |
| Lettuce | Mar 26 | Apr 23–Apr 30 | 162 | two-plantings: Plant Apr 23 and again by Aug 4; both mature before Oct 2. | Aug 4 |
| Carrots | — | Apr 30–May 7 | 169 | fits: 70 days to maturity, 169 available after Apr 30. | Jul 24 |
| Cucumber | Apr 30 | Jun 4–Jun 11 | 99 | fits: 60 days to maturity, 99 available after Jun 4. | Jun 29 |
| Beans | — | May 28–Jun 11 | 113 | fits: 60 days to maturity, 113 available after May 28. | Jul 6 |
| Peas | — | Mar 26–Jun 4 | 190 | fits: 65 days to maturity, 190 available after Mar 26. | Jul 15 |
| Zucchini | May 7 | Jun 4–Jun 11 | 99 | fits: 55 days to maturity, 99 available after Jun 4. | Jul 4 |
| Onion | Feb 26 | Apr 23–May 7 | 162 | fits: 100 days to maturity, 162 available after Apr 23. | — |
| Spinach | — | Mar 26–May 14 | 204 | two-plantings: Plant Mar 26 and again by Aug 23; both mature before Oct 16. | Aug 23 |
| Kale | Mar 12 | Apr 23–May 7 | 176 | two-plantings: Plant Apr 23 and again by Aug 8; both mature before Oct 16. | Aug 8 |
| Broccoli | Mar 26 | Apr 23–May 7 | 162 | fits: 80 days to maturity, 162 available after Apr 23. | Jun 30 |
| Cabbage | Mar 26 | Apr 23–May 7 | 176 | fits: 70 days to maturity, 176 available after Apr 23. | Jul 24 |
| Radish | — | Mar 26–Jun 18 | 190 | two-plantings: Plant Mar 26 and again by Aug 24; both mature before Oct 2. | Aug 24 |
| Beets | — | Mar 26–Jun 18 | 190 | two-plantings: Plant Mar 26 and again by Jul 25; both mature before Oct 2. | Jul 25 |
| Potatoes | — | May 7–May 14 | 148 | fits: 90 days to maturity, 148 available after May 7. | — |
| Garlic | — | Sep 25 | 232 | overwinter: Plant Sep 25 to Oct 16; harvest the following summer. | Oct 16 |
| Strawberry | — | Apr 16–Jun 11 | 183 | perennial: A perennial: plant Apr 16; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 23 | May 28–Jun 4 | 99 | fits: 75 days to maturity, 99 available after May 28. | Jun 7 |
| Pumpkin | May 7 | Jun 4–Jun 4 | 92 | head-start: Even planted out Jun 4, the outdoor season is about 8 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 9 | May 14–May 28 | 141 | fits: 75 days to maturity, 141 available after May 14. | Jul 5 |
| Swiss Chard | Mar 26 | May 7–May 7 | 148 | two-plantings: Plant May 7 and again by Jul 25; both mature before Oct 2. | Jul 25 |
| Arugula | — | Mar 26–Jun 18 | 204 | two-plantings: Plant Mar 26 and again by Aug 23; both mature before Oct 16. | Aug 23 |
| Brussel Sprouts | Mar 26 | Apr 23–May 7 | 176 | fits: 100 days to maturity, 176 available after Apr 23. | Jun 24 |
| Butternut Squash | May 7 | Jun 4–Jun 11 | 92 | head-start: Even planted out Jun 4, the outdoor season is about 8 days short; choose an early variety or grow under cover. | — |
| Eggplant | Apr 2 | Jun 4–Jun 11 | 85 | fits: 70 days to maturity, 85 available after Jun 4. | Jun 5 |
| Okra | Apr 23 | May 28–Jun 4 | 106 | fits: 55 days to maturity, 106 available after May 28. | Jul 4 |
| Basil | Apr 16 | Jun 11–Jun 11 | 92 | fits: 60 days to maturity, 92 available after Jun 11. | Jun 29 |
| Cilantro | — | Apr 23–May 14 | 162 | two-plantings: Plant Apr 23 and again by Jul 30; both mature before Oct 2. | Jul 30 |
| Parsley | Mar 12 | May 28–Jun 4 | 127 | fits: 70 days to maturity, 127 available after May 28. | Jul 10 |
| Celery | Mar 12 | May 28–Jun 11 | 127 | fits: 120 days to maturity, 127 available after May 28. | — |
| Scallions | Mar 12 | Apr 23–May 7 | 176 | two-plantings: Plant Apr 23 and again by Aug 3; both mature before Oct 16. | Aug 3 |
| Turnip | — | Apr 23–May 7 | 176 | two-plantings: Plant Apr 23 and again by Aug 13; both mature before Oct 16. | Aug 13 |
| Kohlrabi | — | Apr 9–Apr 23 | 190 | two-plantings: Plant Apr 9 and again by Aug 8; both mature before Oct 16. | Aug 8 |
| Bok Choy | Apr 23 | May 14–May 21 | 141 | two-plantings: Plant May 14 and again by Aug 4; both mature before Oct 2. | Aug 4 |
| Collards | Mar 12 | Apr 23–May 7 | 176 | two-plantings: Plant Apr 23 and again by Aug 3; both mature before Oct 16. | Aug 3 |
| Cantaloupe | May 7 | Jun 4–Jun 11 | 85 | fits: 85 days to maturity, 85 available after Jun 4. | — |
| Chives | Feb 26 | May 28–Jun 4 | 141 | fits: 90 days to maturity, 141 available after May 28. | — |
| Dill | — | Mar 26–Jun 18 | 190 | two-plantings: Plant Mar 26 and again by Jul 25; both mature before Oct 2. | Jul 25 |
| Oregano | Mar 12 | May 28–Jun 4 | 141 | fits: 80 days to maturity, 141 available after May 28. | — |
| Rosemary | Feb 26 | May 28–Jun 4 | 127 | fits: 80 days to maturity, 127 available after May 28. | — |
| Sage | Mar 26 | May 28–Jun 4 | 141 | fits: 75 days to maturity, 141 available after May 28. | — |
| Thyme | Mar 12 | May 28–Jun 4 | 141 | fits: 90 days to maturity, 141 available after May 28. | — |
| Calendula | Apr 9 | May 7–May 21 | 148 | two-plantings: Plant May 7 and again by Jul 30; both mature before Oct 2. | Jul 30 |
| Cosmos | Apr 23 | May 21–Jun 4 | 113 | fits: 60 days to maturity, 113 available after May 21. | Jun 29 |
| Lavender | Feb 26 | May 21–Jun 4 | 148 | fits: 90 days to maturity, 148 available after May 21. | — |
| Marigolds | Apr 9 | May 21–May 28 | 113 | fits: 50 days to maturity, 113 available after May 21. | Jul 9 |
| Melons | May 7 | Jun 4–Jun 11 | 85 | fits: 85 days to maturity, 85 available after Jun 4. | — |
| Mint | — | May 21–Jun 4 | 148 | fits: 90 days to maturity, 148 available after May 21. | — |
| Nasturtiums | Apr 23 | May 21–May 28 | 113 | fits: 55 days to maturity, 113 available after May 21. | Jul 4 |
| Pole Beans | — | May 28–Jun 11 | 106 | fits: 65 days to maturity, 106 available after May 28. | Jun 24 |
| Spaghetti Squash | May 7 | Jun 4–Jun 11 | 92 | fits: 90 days to maturity, 92 available after Jun 4. | — |
| Sunflowers | — | May 21–Jun 4 | 113 | fits: 70 days to maturity, 113 available after May 21. | Jun 19 |
| Tomatillos | Mar 26 | May 28–Jun 4 | 92 | fits: 75 days to maturity, 92 available after May 28. | May 31 |
| Watermelon | May 7 | May 28–Jun 4 | 92 | fits: 80 days to maturity, 92 available after May 28. | — |
| Yellow Squash | May 7 | Jun 4–Jun 11 | 99 | fits: 55 days to maturity, 99 available after Jun 4. | Jul 4 |
| Zinnias | Apr 23 | May 21–Jun 4 | 113 | fits: 60 days to maturity, 113 available after May 21. | Jun 29 |
Month by month in Oneonta
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 26), Lavender (Feb 26), Onion (Feb 26), Rosemary (Feb 26). |
| March | Start indoors: Celery (Mar 12), Collards (Mar 12), Kale (Mar 12), Oregano (Mar 12), Parsley (Mar 12), Scallions (Mar 12), +8 more. Direct sow from: Arugula (Mar 26), Beets (Mar 26), Dill (Mar 26), Peas (Mar 26), Radish (Mar 26), Spinach (Mar 26). |
| April | Start indoors: Eggplant (Apr 2), Calendula (Apr 9), Cauliflower (Apr 9), Marigolds (Apr 9), Pepper (Apr 9), Basil (Apr 16), +8 more. Direct sow from: Kohlrabi (Apr 9), Cilantro (Apr 23), Turnip (Apr 23), Carrots (Apr 30). Transplant from: Broccoli (Apr 23), Brussel Sprouts (Apr 23), Cabbage (Apr 23), Collards (Apr 23), Kale (Apr 23), Lettuce (Apr 23), +2 more. Plant: Strawberry (Apr 16). |
| May | Start indoors: Butternut Squash (May 7), Cantaloupe (May 7), Melons (May 7), Pumpkin (May 7), Spaghetti Squash (May 7), Watermelon (May 7), +2 more. Direct sow from: Potatoes (May 7), Sunflowers (May 21), Beans (May 28), Pole Beans (May 28). Transplant from: Calendula (May 7), Swiss Chard (May 7), Bok Choy (May 14), Cauliflower (May 14), Cosmos (May 21), Lavender (May 21), +15 more. Last frost around May 21. Last sowing dates: Tomatillos (May 31). |
| June | Transplant from: Butternut Squash (Jun 4), Cantaloupe (Jun 4), Cucumber (Jun 4), Eggplant (Jun 4), Melons (Jun 4), Pepper (Jun 4), +6 more. Last sowing dates: Eggplant (Jun 5), Corn (Jun 7), Sunflowers (Jun 19), Brussel Sprouts (Jun 24), Pole Beans (Jun 24), Basil (Jun 29), +4 more. |
| July | Last sowing dates: Nasturtiums (Jul 4), Okra (Jul 4), Yellow Squash (Jul 4), Zucchini (Jul 4), Cauliflower (Jul 5), Beans (Jul 6), +10 more. |
| August | Last sowing dates: Collards (Aug 3), Scallions (Aug 3), Bok Choy (Aug 4), Lettuce (Aug 4), Kale (Aug 8), Kohlrabi (Aug 8), +4 more. |
| September | Direct sow from: Garlic (Sep 25). First frost around September 25. |
| October | Last sowing dates: Garlic (Oct 16). |
| November | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
| 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 Oneonta, NY (ZIP 13820)?
The median last spring frost date for Oneonta, NY (ZIP code 13820) is around May 21. 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 May 6; one in ten it runs past June 6.
What is the first fall frost date in Oneonta, NY?
The median first fall frost date for Oneonta, NY is around September 25. 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 14 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Oneonta, NY?
The frost-free growing season in Oneonta is about 127 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 Oneonta (127 frost-free days, a moderate season), 38 of 56 planner crops fit outright, 15 get two plantings, 2 need an indoor start, 1 crop is perennial.
What USDA hardiness zone is Oneonta, NY?
Oneonta, NY is in USDA hardiness zone 5b (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 Oneonta, NY?
Start tomatoes indoors Apr 16 and plant out Jun 4 in Oneonta. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Oneonta?
Two: plant Apr 23 and again by Aug 4; both mature before Oct 2.
When do I plant garlic in Oneonta?
Sep 25 to Oct 16; it overwinters and is ready the following summer.
Can I grow Butternut Squash in Oneonta?
Yes, with help. Even planted out Jun 4, the outdoor season is about 8 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Bainbridge (ZIP 13733) has 136 frost-free days, 9 more than Oneonta (ZIP 13820). See Bainbridge ZIP 13733 frost dates
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