Frost Dates for Greensburg, PA 15601
Last spring frost May 13 · First fall frost October 8 · 148 frost-free days · USDA Zone 6b
ZIP 15601 has about 56,400 people.
Moderate season: 148 frost-free days. Spring frost risk spans April 25–May 29 (34 days). Fall frost risk spans September 19–October 25 (36 days).
Frost probability for 15601
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 29 | May 13 | April 25 |
| Fall (first frost) | September 19 | October 8 | October 25 |
Dates come from NOAA 1971–2000 freeze probabilities at SALINA 3 W (21.8 km away); the 50% date is the median year.
Which crops fit a 148-day season in Greensburg
In Greensburg (148 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 8 | May 27–Jun 3 | 106 | fits: 80 days to maturity, 106 available after May 27. | Jun 8 |
| Pepper | Apr 1 | May 27–Jun 3 | 106 | fits: 75 days to maturity, 106 available after May 27. | Jun 13 |
| Lettuce | Mar 18 | Apr 15–Apr 22 | 183 | two-plantings: Plant Apr 15 and again by Aug 17; both mature before Oct 15. | Aug 17 |
| Carrots | — | Apr 22–Apr 29 | 190 | fits: 70 days to maturity, 190 available after Apr 22. | Aug 6 |
| Cucumber | Apr 22 | May 27–Jun 3 | 120 | fits: 60 days to maturity, 120 available after May 27. | Jul 12 |
| Beans | — | May 20–Jun 3 | 134 | two-plantings: Plant May 20 and again by Jul 19; both mature before Oct 1. | Jul 19 |
| Peas | — | Mar 18–May 27 | 211 | fits: 65 days to maturity, 211 available after Mar 18. | Jul 28 |
| Zucchini | Apr 29 | May 27–Jun 3 | 120 | fits: 55 days to maturity, 120 available after May 27. | Jul 17 |
| Onion | Feb 18 | Apr 15–Apr 29 | 183 | fits: 100 days to maturity, 183 available after Apr 15. | — |
| Spinach | — | Mar 18–May 6 | 225 | two-plantings: Plant Mar 18 and again by Sep 5; both mature before Oct 29. | Sep 5 |
| Kale | Mar 4 | Apr 15–Apr 29 | 197 | two-plantings: Plant Apr 15 and again by Aug 21; both mature before Oct 29. | Aug 21 |
| Broccoli | Mar 18 | Apr 15–Apr 29 | 183 | fits: 80 days to maturity, 183 available after Apr 15. | Jul 13 |
| Cabbage | Mar 18 | Apr 15–Apr 29 | 197 | fits: 70 days to maturity, 197 available after Apr 15. | Aug 6 |
| Radish | — | Mar 18–Jun 10 | 211 | two-plantings: Plant Mar 18 and again by Sep 6; both mature before Oct 15. | Sep 6 |
| Beets | — | Mar 18–Jun 10 | 211 | two-plantings: Plant Mar 18 and again by Aug 7; both mature before Oct 15. | Aug 7 |
| Potatoes | — | Apr 29–May 6 | 169 | fits: 90 days to maturity, 169 available after Apr 29. | — |
| Garlic | — | Oct 8 | 253 | overwinter: Plant Oct 8 to Oct 29; harvest the following summer. | Oct 29 |
| Strawberry | — | Apr 8–Jun 3 | 204 | perennial: A perennial: plant Apr 8; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 15 | May 20–May 27 | 120 | fits: 75 days to maturity, 120 available after May 20. | Jun 20 |
| Pumpkin | Apr 29 | May 27–May 27 | 113 | fits: 100 days to maturity, 113 available after May 27. | — |
| Cauliflower | Apr 1 | May 6–May 20 | 162 | fits: 75 days to maturity, 162 available after May 6. | Jul 18 |
| Swiss Chard | Mar 18 | Apr 29–Apr 29 | 169 | two-plantings: Plant Apr 29 and again by Aug 7; both mature before Oct 15. | Aug 7 |
| Arugula | — | Mar 18–Jun 10 | 225 | two-plantings: Plant Mar 18 and again by Sep 5; both mature before Oct 29. | Sep 5 |
| Brussel Sprouts | Mar 18 | Apr 15–Apr 29 | 197 | fits: 100 days to maturity, 197 available after Apr 15. | Jul 7 |
| Butternut Squash | Apr 29 | May 27–Jun 3 | 113 | fits: 100 days to maturity, 113 available after May 27. | — |
| Eggplant | Mar 25 | May 27–Jun 3 | 106 | fits: 70 days to maturity, 106 available after May 27. | Jun 18 |
| Okra | Apr 15 | May 20–May 27 | 127 | two-plantings: Plant May 20 and again by Jul 17; both mature before Sep 24. | Jul 17 |
| Basil | Apr 8 | Jun 3–Jun 3 | 113 | fits: 60 days to maturity, 113 available after Jun 3. | Jul 12 |
| Cilantro | — | Apr 15–May 6 | 183 | two-plantings: Plant Apr 15 and again by Aug 12; both mature before Oct 15. | Aug 12 |
| Parsley | Mar 4 | May 20–May 27 | 148 | fits: 70 days to maturity, 148 available after May 20. | Jul 23 |
| Celery | Mar 4 | May 20–Jun 3 | 148 | fits: 120 days to maturity, 148 available after May 20. | Jun 3 |
| Scallions | Mar 4 | Apr 15–Apr 29 | 197 | two-plantings: Plant Apr 15 and again by Aug 16; both mature before Oct 29. | Aug 16 |
| Turnip | — | Apr 15–Apr 29 | 197 | two-plantings: Plant Apr 15 and again by Aug 26; both mature before Oct 29. | Aug 26 |
| Kohlrabi | — | Apr 1–Apr 15 | 211 | two-plantings: Plant Apr 1 and again by Aug 21; both mature before Oct 29. | Aug 21 |
| Bok Choy | Apr 15 | May 6–May 13 | 162 | two-plantings: Plant May 6 and again by Aug 17; both mature before Oct 15. | Aug 17 |
| Collards | Mar 4 | Apr 15–Apr 29 | 197 | two-plantings: Plant Apr 15 and again by Aug 16; both mature before Oct 29. | Aug 16 |
| Cantaloupe | Apr 29 | May 27–Jun 3 | 106 | fits: 85 days to maturity, 106 available after May 27. | Jun 3 |
| Chives | Feb 18 | May 20–May 27 | 162 | fits: 90 days to maturity, 162 available after May 20. | — |
| Dill | — | Mar 18–Jun 10 | 211 | two-plantings: Plant Mar 18 and again by Aug 7; both mature before Oct 15. | Aug 7 |
| Oregano | Mar 4 | May 20–May 27 | 162 | fits: 80 days to maturity, 162 available after May 20. | — |
| Rosemary | Feb 18 | May 20–May 27 | 148 | fits: 80 days to maturity, 148 available after May 20. | — |
| Sage | Mar 18 | May 20–May 27 | 162 | fits: 75 days to maturity, 162 available after May 20. | — |
| Thyme | Mar 4 | May 20–May 27 | 162 | fits: 90 days to maturity, 162 available after May 20. | — |
| Calendula | Apr 1 | Apr 29–May 13 | 169 | two-plantings: Plant Apr 29 and again by Aug 12; both mature before Oct 15. | Aug 12 |
| Cosmos | Apr 15 | May 13–May 27 | 134 | two-plantings: Plant May 13 and again by Jul 12; both mature before Sep 24. | Jul 12 |
| Lavender | Feb 18 | May 13–May 27 | 169 | fits: 90 days to maturity, 169 available after May 13. | — |
| Marigolds | Apr 1 | May 13–May 20 | 134 | two-plantings: Plant May 13 and again by Jul 22; both mature before Sep 24. | Jul 22 |
| Melons | Apr 29 | May 27–Jun 3 | 106 | fits: 85 days to maturity, 106 available after May 27. | Jun 3 |
| Mint | — | May 13–May 27 | 169 | fits: 90 days to maturity, 169 available after May 13. | — |
| Nasturtiums | Apr 15 | May 13–May 20 | 134 | two-plantings: Plant May 13 and again by Jul 17; both mature before Sep 24. | Jul 17 |
| Pole Beans | — | May 20–Jun 3 | 127 | fits: 65 days to maturity, 127 available after May 20. | Jul 7 |
| Spaghetti Squash | Apr 29 | May 27–Jun 3 | 113 | fits: 90 days to maturity, 113 available after May 27. | Jun 5 |
| Sunflowers | — | May 13–May 27 | 134 | fits: 70 days to maturity, 134 available after May 13. | Jul 2 |
| Tomatillos | Mar 18 | May 20–May 27 | 113 | fits: 75 days to maturity, 113 available after May 20. | Jun 13 |
| Watermelon | Apr 29 | May 20–May 27 | 113 | fits: 80 days to maturity, 113 available after May 20. | Jun 8 |
| Yellow Squash | Apr 29 | May 27–Jun 3 | 120 | fits: 55 days to maturity, 120 available after May 27. | Jul 17 |
| Zinnias | Apr 15 | May 13–May 27 | 134 | two-plantings: Plant May 13 and again by Jul 12; both mature before Sep 24. | Jul 12 |
Month by month in Greensburg
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 18), Lavender (Feb 18), Onion (Feb 18), Rosemary (Feb 18). |
| March | Start indoors: Celery (Mar 4), Collards (Mar 4), Kale (Mar 4), Oregano (Mar 4), Parsley (Mar 4), Scallions (Mar 4), +9 more. Direct sow from: Arugula (Mar 18), Beets (Mar 18), Dill (Mar 18), Peas (Mar 18), Radish (Mar 18), Spinach (Mar 18). |
| April | Start indoors: Calendula (Apr 1), Cauliflower (Apr 1), Marigolds (Apr 1), Pepper (Apr 1), Basil (Apr 8), Tomato (Apr 8), +15 more. Direct sow from: Kohlrabi (Apr 1), Cilantro (Apr 15), Turnip (Apr 15), Carrots (Apr 22), Potatoes (Apr 29). Transplant from: Broccoli (Apr 15), Brussel Sprouts (Apr 15), Cabbage (Apr 15), Collards (Apr 15), Kale (Apr 15), Lettuce (Apr 15), +4 more. Plant: Strawberry (Apr 8). |
| May | Direct sow from: Sunflowers (May 13), Beans (May 20), Pole Beans (May 20). Transplant from: Bok Choy (May 6), Cauliflower (May 6), Cosmos (May 13), Lavender (May 13), Marigolds (May 13), Mint (May 13), +24 more. Last frost around May 13. |
| June | Transplant from: Basil (Jun 3). Last sowing dates: Cantaloupe (Jun 3), Celery (Jun 3), Melons (Jun 3), Spaghetti Squash (Jun 5), Tomato (Jun 8), Watermelon (Jun 8), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 2), Brussel Sprouts (Jul 7), Pole Beans (Jul 7), Basil (Jul 12), Cosmos (Jul 12), Cucumber (Jul 12), +11 more. |
| August | Last sowing dates: Cabbage (Aug 6), Carrots (Aug 6), Beets (Aug 7), Dill (Aug 7), Swiss Chard (Aug 7), Calendula (Aug 12), +8 more. |
| September | Last sowing dates: Arugula (Sep 5), Spinach (Sep 5), Radish (Sep 6). |
| October | Direct sow from: Garlic (Oct 8). First frost around October 8. Last sowing dates: Garlic (Oct 29). |
| 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 Greensburg, PA (ZIP 15601)?
The median last spring frost date for Greensburg, PA (ZIP code 15601) is around May 13. 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 Greensburg, PA?
The median first fall frost date for Greensburg, PA is around October 8. 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 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Greensburg, PA?
The frost-free growing season in Greensburg is about 148 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 Greensburg (148 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 Greensburg, PA?
Greensburg, PA 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 Greensburg, PA?
Start tomatoes indoors Apr 8 and plant out May 27 in Greensburg. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Greensburg?
Two: plant Apr 15 and again by Aug 17; both mature before Oct 15.
When do I plant garlic in Greensburg?
Oct 8 to Oct 29; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Irwin (ZIP 15642) has 166 frost-free days, 18 more than Greensburg (ZIP 15601). See Irwin ZIP 15642 frost dates
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