Frost Dates for Hermitage, PA 16148
Last spring frost May 12 · First fall frost October 9 · 150 frost-free days · USDA Zone 6a
ZIP 16148 has about 16,500 people.
Moderate season: 150 frost-free days. Spring frost risk spans April 25–May 29 (34 days). Fall frost risk spans September 21–October 27 (36 days).
Frost probability for 16148
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 29 | May 12 | April 25 |
| Fall (first frost) | September 21 | October 9 | October 27 |
Dates come from NOAA 1971–2000 freeze probabilities at NEW CASTLE 1 N (24.5 km away); the 50% date is the median year.
Which crops fit a 150-day season in Hermitage
In Hermitage (150 frost-free days, a moderate season), 34 of 56 planner crops fit outright, 21 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 7 | May 26–Jun 2 | 108 | fits: 80 days to maturity, 108 available after May 26. | Jun 9 |
| Pepper | Mar 31 | May 26–Jun 2 | 108 | fits: 75 days to maturity, 108 available after May 26. | Jun 14 |
| Lettuce | Mar 17 | Apr 14–Apr 21 | 185 | two-plantings: Plant Apr 14 and again by Aug 18; both mature before Oct 16. | Aug 18 |
| Carrots | — | Apr 21–Apr 28 | 192 | fits: 70 days to maturity, 192 available after Apr 21. | Aug 7 |
| Cucumber | Apr 21 | May 26–Jun 2 | 122 | fits: 60 days to maturity, 122 available after May 26. | Jul 13 |
| Beans | — | May 19–Jun 2 | 136 | two-plantings: Plant May 19 and again by Jul 20; both mature before Oct 2. | Jul 20 |
| Peas | — | Mar 17–May 26 | 213 | fits: 65 days to maturity, 213 available after Mar 17. | Jul 29 |
| Zucchini | Apr 28 | May 26–Jun 2 | 122 | fits: 55 days to maturity, 122 available after May 26. | Jul 18 |
| Onion | Feb 17 | Apr 14–Apr 28 | 185 | fits: 100 days to maturity, 185 available after Apr 14. | — |
| Spinach | — | Mar 17–May 5 | 227 | two-plantings: Plant Mar 17 and again by Sep 6; both mature before Oct 30. | Sep 6 |
| Kale | Mar 3 | Apr 14–Apr 28 | 199 | two-plantings: Plant Apr 14 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Broccoli | Mar 17 | Apr 14–Apr 28 | 185 | fits: 80 days to maturity, 185 available after Apr 14. | Jul 14 |
| Cabbage | Mar 17 | Apr 14–Apr 28 | 199 | fits: 70 days to maturity, 199 available after Apr 14. | Aug 7 |
| Radish | — | Mar 17–Jun 9 | 213 | two-plantings: Plant Mar 17 and again by Sep 7; both mature before Oct 16. | Sep 7 |
| Beets | — | Mar 17–Jun 9 | 213 | two-plantings: Plant Mar 17 and again by Aug 8; both mature before Oct 16. | Aug 8 |
| Potatoes | — | Apr 28–May 5 | 171 | fits: 90 days to maturity, 171 available after Apr 28. | — |
| Garlic | — | Oct 9 | 255 | overwinter: Plant Oct 9 to Oct 30; harvest the following summer. | Oct 30 |
| Strawberry | — | Apr 7–Jun 2 | 206 | perennial: A perennial: plant Apr 7; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 14 | May 19–May 26 | 122 | fits: 75 days to maturity, 122 available after May 19. | Jun 21 |
| Pumpkin | Apr 28 | May 26–May 26 | 115 | fits: 100 days to maturity, 115 available after May 26. | May 27 |
| Cauliflower | Mar 31 | May 5–May 19 | 164 | fits: 75 days to maturity, 164 available after May 5. | Jul 19 |
| Swiss Chard | Mar 17 | Apr 28–Apr 28 | 171 | two-plantings: Plant Apr 28 and again by Aug 8; both mature before Oct 16. | Aug 8 |
| Arugula | — | Mar 17–Jun 9 | 227 | two-plantings: Plant Mar 17 and again by Sep 6; both mature before Oct 30. | Sep 6 |
| Brussel Sprouts | Mar 17 | Apr 14–Apr 28 | 199 | fits: 100 days to maturity, 199 available after Apr 14. | Jul 8 |
| Butternut Squash | Apr 28 | May 26–Jun 2 | 115 | fits: 100 days to maturity, 115 available after May 26. | May 27 |
| Eggplant | Mar 24 | May 26–Jun 2 | 108 | fits: 70 days to maturity, 108 available after May 26. | Jun 19 |
| Okra | Apr 14 | May 19–May 26 | 129 | two-plantings: Plant May 19 and again by Jul 18; both mature before Sep 25. | Jul 18 |
| Basil | Apr 7 | Jun 2–Jun 2 | 115 | fits: 60 days to maturity, 115 available after Jun 2. | Jul 13 |
| Cilantro | — | Apr 14–May 5 | 185 | two-plantings: Plant Apr 14 and again by Aug 13; both mature before Oct 16. | Aug 13 |
| Parsley | Mar 3 | May 19–May 26 | 150 | fits: 70 days to maturity, 150 available after May 19. | Jul 24 |
| Celery | Mar 3 | May 19–Jun 2 | 150 | fits: 120 days to maturity, 150 available after May 19. | Jun 4 |
| Scallions | Mar 3 | Apr 14–Apr 28 | 199 | two-plantings: Plant Apr 14 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Turnip | — | Apr 14–Apr 28 | 199 | two-plantings: Plant Apr 14 and again by Aug 27; both mature before Oct 30. | Aug 27 |
| Kohlrabi | — | Mar 31–Apr 14 | 213 | two-plantings: Plant Mar 31 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Bok Choy | Apr 14 | May 5–May 12 | 164 | two-plantings: Plant May 5 and again by Aug 18; both mature before Oct 16. | Aug 18 |
| Collards | Mar 3 | Apr 14–Apr 28 | 199 | two-plantings: Plant Apr 14 and again by Aug 17; both mature before Oct 30. | Aug 17 |
| Cantaloupe | Apr 28 | May 26–Jun 2 | 108 | fits: 85 days to maturity, 108 available after May 26. | Jun 4 |
| Chives | Feb 17 | May 19–May 26 | 164 | fits: 90 days to maturity, 164 available after May 19. | — |
| Dill | — | Mar 17–Jun 9 | 213 | two-plantings: Plant Mar 17 and again by Aug 8; both mature before Oct 16. | Aug 8 |
| Oregano | Mar 3 | May 19–May 26 | 164 | fits: 80 days to maturity, 164 available after May 19. | — |
| Rosemary | Feb 17 | May 19–May 26 | 150 | fits: 80 days to maturity, 150 available after May 19. | — |
| Sage | Mar 17 | May 19–May 26 | 164 | fits: 75 days to maturity, 164 available after May 19. | — |
| Thyme | Mar 3 | May 19–May 26 | 164 | fits: 90 days to maturity, 164 available after May 19. | — |
| Calendula | Mar 31 | Apr 28–May 12 | 171 | two-plantings: Plant Apr 28 and again by Aug 13; both mature before Oct 16. | Aug 13 |
| Cosmos | Apr 14 | May 12–May 26 | 136 | two-plantings: Plant May 12 and again by Jul 13; both mature before Sep 25. | Jul 13 |
| Lavender | Feb 17 | May 12–May 26 | 171 | fits: 90 days to maturity, 171 available after May 12. | — |
| Marigolds | Mar 31 | May 12–May 19 | 136 | two-plantings: Plant May 12 and again by Jul 23; both mature before Sep 25. | Jul 23 |
| Melons | Apr 28 | May 26–Jun 2 | 108 | fits: 85 days to maturity, 108 available after May 26. | Jun 4 |
| Mint | — | May 12–May 26 | 171 | fits: 90 days to maturity, 171 available after May 12. | — |
| Nasturtiums | Apr 14 | May 12–May 19 | 136 | two-plantings: Plant May 12 and again by Jul 18; both mature before Sep 25. | Jul 18 |
| Pole Beans | — | May 19–Jun 2 | 129 | fits: 65 days to maturity, 129 available after May 19. | Jul 8 |
| Spaghetti Squash | Apr 28 | May 26–Jun 2 | 115 | fits: 90 days to maturity, 115 available after May 26. | Jun 6 |
| Sunflowers | — | May 12–May 26 | 136 | fits: 70 days to maturity, 136 available after May 12. | Jul 3 |
| Tomatillos | Mar 17 | May 19–May 26 | 115 | fits: 75 days to maturity, 115 available after May 19. | Jun 14 |
| Watermelon | Apr 28 | May 19–May 26 | 115 | fits: 80 days to maturity, 115 available after May 19. | Jun 9 |
| Yellow Squash | Apr 28 | May 26–Jun 2 | 122 | fits: 55 days to maturity, 122 available after May 26. | Jul 18 |
| Zinnias | Apr 14 | May 12–May 26 | 136 | two-plantings: Plant May 12 and again by Jul 13; both mature before Sep 25. | Jul 13 |
Month by month in Hermitage
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 17), Lavender (Feb 17), Onion (Feb 17), Rosemary (Feb 17). |
| March | Start indoors: Celery (Mar 3), Collards (Mar 3), Kale (Mar 3), Oregano (Mar 3), Parsley (Mar 3), Scallions (Mar 3), +13 more. Direct sow from: Arugula (Mar 17), Beets (Mar 17), Dill (Mar 17), Peas (Mar 17), Radish (Mar 17), Spinach (Mar 17), +1 more. |
| April | Start indoors: Basil (Apr 7), Tomato (Apr 7), Bok Choy (Apr 14), Corn (Apr 14), Cosmos (Apr 14), Nasturtiums (Apr 14), +11 more. Direct sow from: Cilantro (Apr 14), Turnip (Apr 14), Carrots (Apr 21), Potatoes (Apr 28). Transplant from: Broccoli (Apr 14), Brussel Sprouts (Apr 14), Cabbage (Apr 14), Collards (Apr 14), Kale (Apr 14), Lettuce (Apr 14), +4 more. Plant: Strawberry (Apr 7). |
| May | Direct sow from: Sunflowers (May 12), Beans (May 19), Pole Beans (May 19). Transplant from: Bok Choy (May 5), Cauliflower (May 5), Cosmos (May 12), Lavender (May 12), Marigolds (May 12), Mint (May 12), +24 more. Last frost around May 12. Last sowing dates: Butternut Squash (May 27), Pumpkin (May 27). |
| June | Transplant from: Basil (Jun 2). Last sowing dates: Cantaloupe (Jun 4), Celery (Jun 4), Melons (Jun 4), Spaghetti Squash (Jun 6), Tomato (Jun 9), Watermelon (Jun 9), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 3), Brussel Sprouts (Jul 8), Pole Beans (Jul 8), Basil (Jul 13), Cosmos (Jul 13), Cucumber (Jul 13), +11 more. |
| August | Last sowing dates: Cabbage (Aug 7), Carrots (Aug 7), Beets (Aug 8), Dill (Aug 8), Swiss Chard (Aug 8), Calendula (Aug 13), +8 more. |
| September | Last sowing dates: Arugula (Sep 6), Spinach (Sep 6), Radish (Sep 7). |
| October | Direct sow from: Garlic (Oct 9). First frost around October 9. Last sowing dates: Garlic (Oct 30). |
| 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 Hermitage, PA (ZIP 16148)?
The median last spring frost date for Hermitage, PA (ZIP code 16148) is around May 12. 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 25; one in ten it runs past May 29.
What is the first fall frost date in Hermitage, PA?
The median first fall frost date for Hermitage, PA is around October 9. 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 21 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Hermitage, PA?
The frost-free growing season in Hermitage is about 150 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 Hermitage (150 frost-free days, a moderate season), 34 of 56 planner crops fit outright, 21 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Hermitage, PA?
Hermitage, 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 Hermitage, PA?
Start tomatoes indoors Apr 7 and plant out May 26 in Hermitage. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Hermitage?
Two: plant Apr 14 and again by Aug 18; both mature before Oct 16.
When do I plant garlic in Hermitage?
Oct 9 to Oct 30; it overwinters and is ready the following summer.
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