Frost Dates for Warren, PA 16365
Last spring frost May 20 · First fall frost September 30 · 133 frost-free days · USDA Zone 6a
ZIP 16365 has about 17,300 people.
Moderate season: 133 frost-free days. Spring frost risk spans May 2–June 7 (36 days). Fall frost risk spans September 10–October 19 (39 days).
Frost probability for 16365
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 7 | May 20 | May 2 |
| Fall (first frost) | September 10 | September 30 | October 19 |
Dates come from NOAA 1971–2000 freeze probabilities at JAMESTOWN 4 ENE (30.1 km away); the 50% date is the median year.
Which crops fit a 133-day season in Warren
In Warren (133 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 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 15 | Jun 3–Jun 10 | 91 | fits: 80 days to maturity, 91 available after Jun 3. | — |
| Pepper | Apr 8 | Jun 3–Jun 10 | 91 | fits: 75 days to maturity, 91 available after Jun 3. | Jun 5 |
| Lettuce | Mar 25 | Apr 22–Apr 29 | 168 | two-plantings: Plant Apr 22 and again by Aug 9; both mature before Oct 7. | Aug 9 |
| Carrots | — | Apr 29–May 6 | 175 | fits: 70 days to maturity, 175 available after Apr 29. | Jul 29 |
| Cucumber | Apr 29 | Jun 3–Jun 10 | 105 | fits: 60 days to maturity, 105 available after Jun 3. | Jul 4 |
| Beans | — | May 27–Jun 10 | 119 | fits: 60 days to maturity, 119 available after May 27. | Jul 11 |
| Peas | — | Mar 25–Jun 3 | 196 | fits: 65 days to maturity, 196 available after Mar 25. | Jul 20 |
| Zucchini | May 6 | Jun 3–Jun 10 | 105 | fits: 55 days to maturity, 105 available after Jun 3. | Jul 9 |
| Onion | Feb 25 | Apr 22–May 6 | 168 | fits: 100 days to maturity, 168 available after Apr 22. | — |
| Spinach | — | Mar 25–May 13 | 210 | two-plantings: Plant Mar 25 and again by Aug 28; both mature before Oct 21. | Aug 28 |
| Kale | Mar 11 | Apr 22–May 6 | 182 | two-plantings: Plant Apr 22 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Broccoli | Mar 25 | Apr 22–May 6 | 168 | fits: 80 days to maturity, 168 available after Apr 22. | Jul 5 |
| Cabbage | Mar 25 | Apr 22–May 6 | 182 | fits: 70 days to maturity, 182 available after Apr 22. | Jul 29 |
| Radish | — | Mar 25–Jun 17 | 196 | two-plantings: Plant Mar 25 and again by Aug 29; both mature before Oct 7. | Aug 29 |
| Beets | — | Mar 25–Jun 17 | 196 | two-plantings: Plant Mar 25 and again by Jul 30; both mature before Oct 7. | Jul 30 |
| Potatoes | — | May 6–May 13 | 154 | fits: 90 days to maturity, 154 available after May 6. | — |
| Garlic | — | Sep 30 | 238 | overwinter: Plant Sep 30 to Oct 21; harvest the following summer. | Oct 21 |
| Strawberry | — | Apr 15–Jun 10 | 189 | perennial: A perennial: plant Apr 15; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 22 | May 27–Jun 3 | 105 | fits: 75 days to maturity, 105 available after May 27. | Jun 12 |
| Pumpkin | May 6 | Jun 3–Jun 3 | 98 | head-start: Even planted out Jun 3, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 8 | May 13–May 27 | 147 | fits: 75 days to maturity, 147 available after May 13. | Jul 10 |
| Swiss Chard | Mar 25 | May 6–May 6 | 154 | two-plantings: Plant May 6 and again by Jul 30; both mature before Oct 7. | Jul 30 |
| Arugula | — | Mar 25–Jun 17 | 210 | two-plantings: Plant Mar 25 and again by Aug 28; both mature before Oct 21. | Aug 28 |
| Brussel Sprouts | Mar 25 | Apr 22–May 6 | 182 | fits: 100 days to maturity, 182 available after Apr 22. | Jun 29 |
| Butternut Squash | May 6 | Jun 3–Jun 10 | 98 | head-start: Even planted out Jun 3, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Eggplant | Apr 1 | Jun 3–Jun 10 | 91 | fits: 70 days to maturity, 91 available after Jun 3. | Jun 10 |
| Okra | Apr 22 | May 27–Jun 3 | 112 | fits: 55 days to maturity, 112 available after May 27. | Jul 9 |
| Basil | Apr 15 | Jun 10–Jun 10 | 98 | fits: 60 days to maturity, 98 available after Jun 10. | Jul 4 |
| Cilantro | — | Apr 22–May 13 | 168 | two-plantings: Plant Apr 22 and again by Aug 4; both mature before Oct 7. | Aug 4 |
| Parsley | Mar 11 | May 27–Jun 3 | 133 | fits: 70 days to maturity, 133 available after May 27. | Jul 15 |
| Celery | Mar 11 | May 27–Jun 10 | 133 | fits: 120 days to maturity, 133 available after May 27. | — |
| Scallions | Mar 11 | Apr 22–May 6 | 182 | two-plantings: Plant Apr 22 and again by Aug 8; both mature before Oct 21. | Aug 8 |
| Turnip | — | Apr 22–May 6 | 182 | two-plantings: Plant Apr 22 and again by Aug 18; both mature before Oct 21. | Aug 18 |
| Kohlrabi | — | Apr 8–Apr 22 | 196 | two-plantings: Plant Apr 8 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Bok Choy | Apr 22 | May 13–May 20 | 147 | two-plantings: Plant May 13 and again by Aug 9; both mature before Oct 7. | Aug 9 |
| Collards | Mar 11 | Apr 22–May 6 | 182 | two-plantings: Plant Apr 22 and again by Aug 8; both mature before Oct 21. | Aug 8 |
| Cantaloupe | May 6 | Jun 3–Jun 10 | 91 | fits: 85 days to maturity, 91 available after Jun 3. | — |
| Chives | Feb 25 | May 27–Jun 3 | 147 | fits: 90 days to maturity, 147 available after May 27. | — |
| Dill | — | Mar 25–Jun 17 | 196 | two-plantings: Plant Mar 25 and again by Jul 30; both mature before Oct 7. | Jul 30 |
| Oregano | Mar 11 | May 27–Jun 3 | 147 | fits: 80 days to maturity, 147 available after May 27. | — |
| Rosemary | Feb 25 | May 27–Jun 3 | 133 | fits: 80 days to maturity, 133 available after May 27. | — |
| Sage | Mar 25 | May 27–Jun 3 | 147 | fits: 75 days to maturity, 147 available after May 27. | — |
| Thyme | Mar 11 | May 27–Jun 3 | 147 | fits: 90 days to maturity, 147 available after May 27. | — |
| Calendula | Apr 8 | May 6–May 20 | 154 | two-plantings: Plant May 6 and again by Aug 4; both mature before Oct 7. | Aug 4 |
| Cosmos | Apr 22 | May 20–Jun 3 | 119 | fits: 60 days to maturity, 119 available after May 20. | Jul 4 |
| Lavender | Feb 25 | May 20–Jun 3 | 154 | fits: 90 days to maturity, 154 available after May 20. | — |
| Marigolds | Apr 8 | May 20–May 27 | 119 | two-plantings: Plant May 20 and again by Jul 14; both mature before Sep 16. | Jul 14 |
| Melons | May 6 | Jun 3–Jun 10 | 91 | fits: 85 days to maturity, 91 available after Jun 3. | — |
| Mint | — | May 20–Jun 3 | 154 | fits: 90 days to maturity, 154 available after May 20. | — |
| Nasturtiums | Apr 22 | May 20–May 27 | 119 | fits: 55 days to maturity, 119 available after May 20. | Jul 9 |
| Pole Beans | — | May 27–Jun 10 | 112 | fits: 65 days to maturity, 112 available after May 27. | Jun 29 |
| Spaghetti Squash | May 6 | Jun 3–Jun 10 | 98 | fits: 90 days to maturity, 98 available after Jun 3. | — |
| Sunflowers | — | May 20–Jun 3 | 119 | fits: 70 days to maturity, 119 available after May 20. | Jun 24 |
| Tomatillos | Mar 25 | May 27–Jun 3 | 98 | fits: 75 days to maturity, 98 available after May 27. | Jun 5 |
| Watermelon | May 6 | May 27–Jun 3 | 98 | fits: 80 days to maturity, 98 available after May 27. | May 31 |
| Yellow Squash | May 6 | Jun 3–Jun 10 | 105 | fits: 55 days to maturity, 105 available after Jun 3. | Jul 9 |
| Zinnias | Apr 22 | May 20–Jun 3 | 119 | fits: 60 days to maturity, 119 available after May 20. | Jul 4 |
Month by month in Warren
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 25), Lavender (Feb 25), Onion (Feb 25), Rosemary (Feb 25). |
| March | Start indoors: Celery (Mar 11), Collards (Mar 11), Kale (Mar 11), Oregano (Mar 11), Parsley (Mar 11), Scallions (Mar 11), +8 more. Direct sow from: Arugula (Mar 25), Beets (Mar 25), Dill (Mar 25), Peas (Mar 25), Radish (Mar 25), Spinach (Mar 25). |
| April | Start indoors: Eggplant (Apr 1), Calendula (Apr 8), Cauliflower (Apr 8), Marigolds (Apr 8), Pepper (Apr 8), Basil (Apr 15), +8 more. Direct sow from: Kohlrabi (Apr 8), Cilantro (Apr 22), Turnip (Apr 22), Carrots (Apr 29). Transplant from: Broccoli (Apr 22), Brussel Sprouts (Apr 22), Cabbage (Apr 22), Collards (Apr 22), Kale (Apr 22), Lettuce (Apr 22), +2 more. Plant: Strawberry (Apr 15). |
| May | Start indoors: Butternut Squash (May 6), Cantaloupe (May 6), Melons (May 6), Pumpkin (May 6), Spaghetti Squash (May 6), Watermelon (May 6), +2 more. Direct sow from: Potatoes (May 6), Sunflowers (May 20), Beans (May 27), Pole Beans (May 27). Transplant from: Calendula (May 6), Swiss Chard (May 6), Bok Choy (May 13), Cauliflower (May 13), Cosmos (May 20), Lavender (May 20), +15 more. Last frost around May 20. Last sowing dates: Watermelon (May 31). |
| June | Transplant from: Butternut Squash (Jun 3), Cantaloupe (Jun 3), Cucumber (Jun 3), Eggplant (Jun 3), Melons (Jun 3), Pepper (Jun 3), +6 more. Last sowing dates: Pepper (Jun 5), Tomatillos (Jun 5), Eggplant (Jun 10), Corn (Jun 12), Sunflowers (Jun 24), Brussel Sprouts (Jun 29), +1 more. |
| July | Last sowing dates: Basil (Jul 4), Cosmos (Jul 4), Cucumber (Jul 4), Zinnias (Jul 4), Broccoli (Jul 5), Nasturtiums (Jul 9), +13 more. |
| August | Last sowing dates: Calendula (Aug 4), Cilantro (Aug 4), Collards (Aug 8), Scallions (Aug 8), Bok Choy (Aug 9), Lettuce (Aug 9), +6 more. |
| September | Direct sow from: Garlic (Sep 30). First frost around September 30. |
| October | Last sowing dates: Garlic (Oct 21). |
| 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 Warren, PA (ZIP 16365)?
The median last spring frost date for Warren, PA (ZIP code 16365) is around May 20. 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 2; one in ten it runs past June 7.
What is the first fall frost date in Warren, PA?
The median first fall frost date for Warren, PA is around September 30. 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 10 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Warren, PA?
The frost-free growing season in Warren is about 133 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 Warren (133 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 get two plantings, 2 need an indoor start, 1 crop is perennial.
What USDA hardiness zone is Warren, PA?
Warren, PA 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 Warren, PA?
Start tomatoes indoors Apr 15 and plant out Jun 3 in Warren. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Warren?
Two: plant Apr 22 and again by Aug 9; both mature before Oct 7.
When do I plant garlic in Warren?
Sep 30 to Oct 21; it overwinters and is ready the following summer.
Can I grow Butternut Squash in Warren?
Yes, with help. Even planted out Jun 3, the outdoor season is about 2 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Jamestown (ZIP 14701) has 152 frost-free days, 19 more than Warren (ZIP 16365). See Jamestown ZIP 14701 frost dates
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