Frost Dates for Pittsburg, NH 03592
Last spring frost June 4 · First fall frost September 9 · 97 frost-free days · USDA Zone 4a
ZIP 03592 has about 1,050 people.
Short season: 97 frost-free days. Spring frost risk spans May 16–June 22 (37 days). Fall frost risk spans August 27–September 26 (30 days).
Frost probability for 03592
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 22 | June 4 | May 16 |
| Fall (first frost) | August 27 | September 9 | September 26 |
Dates come from NOAA 1971–2000 freeze probabilities at FIRST CONNECTICUT LAKE (3.8 km away); the 50% date is the median year.
Which crops fit a 97-day season in Pittsburg
In Pittsburg (97 frost-free days, a short season), 29 of 56 planner crops fit outright, 14 get two plantings, 5 need an indoor start, 7 don't reliably mature, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 30 | Jun 18–Jun 25 | 55 | no-fit: Needs 80 days; Pittsburg has 55 after Jun 18. | — |
| Pepper | Apr 23 | Jun 18–Jun 25 | 55 | head-start: Even planted out Jun 18, the outdoor season is about 20 days short; choose an early variety or grow under cover. | — |
| Lettuce | Apr 9 | May 7–May 14 | 132 | two-plantings: Plant May 7 and again by Jul 19; both mature before Sep 16. | Jul 19 |
| Carrots | — | May 14–May 21 | 139 | fits: 70 days to maturity, 139 available after May 14. | Jul 8 |
| Cucumber | May 14 | Jun 18–Jun 25 | 69 | fits: 60 days to maturity, 69 available after Jun 18. | — |
| Beans | — | Jun 11–Jun 25 | 83 | fits: 60 days to maturity, 83 available after Jun 11. | Jun 20 |
| Peas | — | Apr 9–Jun 18 | 160 | fits: 65 days to maturity, 160 available after Apr 9. | Jun 29 |
| Zucchini | May 21 | Jun 18–Jun 25 | 69 | fits: 55 days to maturity, 69 available after Jun 18. | — |
| Onion | Mar 12 | May 7–May 21 | 132 | fits: 100 days to maturity, 132 available after May 7. | — |
| Spinach | — | Apr 9–May 28 | 174 | two-plantings: Plant Apr 9 and again by Aug 7; both mature before Sep 30. | Aug 7 |
| Kale | Mar 26 | May 7–May 21 | 146 | two-plantings: Plant May 7 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Broccoli | Apr 9 | May 7–May 21 | 132 | fits: 80 days to maturity, 132 available after May 7. | Jun 14 |
| Cabbage | Apr 9 | May 7–May 21 | 146 | fits: 70 days to maturity, 146 available after May 7. | Jul 8 |
| Radish | — | Apr 9–Jul 2 | 160 | two-plantings: Plant Apr 9 and again by Aug 8; both mature before Sep 16. | Aug 8 |
| Beets | — | Apr 9–Jul 2 | 160 | two-plantings: Plant Apr 9 and again by Jul 9; both mature before Sep 16. | Jul 9 |
| Potatoes | — | May 21–May 28 | 118 | fits: 90 days to maturity, 118 available after May 21. | — |
| Garlic | — | Sep 9 | 202 | overwinter: Plant Sep 9 to Sep 30; harvest the following summer. | Sep 30 |
| Strawberry | — | Apr 30–Jun 25 | 153 | perennial: A perennial: plant Apr 30; it fruits from the following year and keeps producing for several years. | — |
| Corn | May 7 | Jun 11–Jun 18 | 69 | head-start: Even planted out Jun 11, the outdoor season is about 6 days short; choose an early variety or grow under cover. | — |
| Pumpkin | May 21 | Jun 18–Jun 18 | 62 | no-fit: Needs 100 days; Pittsburg has 62 after Jun 18. | — |
| Cauliflower | Apr 23 | May 28–Jun 11 | 111 | fits: 75 days to maturity, 111 available after May 28. | Jun 19 |
| Swiss Chard | Apr 9 | May 21–May 21 | 118 | fits: 55 days to maturity, 118 available after May 21. | Jul 9 |
| Arugula | — | Apr 9–Jul 2 | 174 | two-plantings: Plant Apr 9 and again by Aug 7; both mature before Sep 30. | Aug 7 |
| Brussel Sprouts | Apr 9 | May 7–May 21 | 146 | fits: 100 days to maturity, 146 available after May 7. | Jun 8 |
| Butternut Squash | May 21 | Jun 18–Jun 25 | 62 | no-fit: Needs 100 days; Pittsburg has 62 after Jun 18. | — |
| Eggplant | Apr 16 | Jun 18–Jun 25 | 55 | head-start: Even planted out Jun 18, the outdoor season is about 15 days short; choose an early variety or grow under cover. | — |
| Okra | May 7 | Jun 11–Jun 18 | 76 | fits: 55 days to maturity, 76 available after Jun 11. | Jun 18 |
| Basil | Apr 30 | Jun 25–Jun 25 | 62 | fits: 60 days to maturity, 62 available after Jun 25. | — |
| Cilantro | — | May 7–May 28 | 132 | two-plantings: Plant May 7 and again by Jul 14; both mature before Sep 16. | Jul 14 |
| Parsley | Mar 26 | Jun 11–Jun 18 | 97 | fits: 70 days to maturity, 97 available after Jun 11. | Jun 24 |
| Celery | Mar 26 | Jun 11–Jun 25 | 97 | no-fit: Needs 120 days; Pittsburg has 97 after Jun 11. | — |
| Scallions | Mar 26 | May 7–May 21 | 146 | two-plantings: Plant May 7 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Turnip | — | May 7–May 21 | 146 | two-plantings: Plant May 7 and again by Jul 28; both mature before Sep 30. | Jul 28 |
| Kohlrabi | — | Apr 23–May 7 | 160 | two-plantings: Plant Apr 23 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Bok Choy | May 7 | May 28–Jun 4 | 111 | two-plantings: Plant May 28 and again by Jul 19; both mature before Sep 16. | Jul 19 |
| Collards | Mar 26 | May 7–May 21 | 146 | two-plantings: Plant May 7 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Cantaloupe | May 21 | Jun 18–Jun 25 | 55 | no-fit: Needs 85 days; Pittsburg has 55 after Jun 18. | — |
| Chives | Mar 12 | Jun 11–Jun 18 | 111 | fits: 90 days to maturity, 111 available after Jun 11. | — |
| Dill | — | Apr 9–Jul 2 | 160 | two-plantings: Plant Apr 9 and again by Jul 9; both mature before Sep 16. | Jul 9 |
| Oregano | Mar 26 | Jun 11–Jun 18 | 111 | fits: 80 days to maturity, 111 available after Jun 11. | — |
| Rosemary | Mar 12 | Jun 11–Jun 18 | 97 | fits: 80 days to maturity, 97 available after Jun 11. | — |
| Sage | Apr 9 | Jun 11–Jun 18 | 111 | fits: 75 days to maturity, 111 available after Jun 11. | — |
| Thyme | Mar 26 | Jun 11–Jun 18 | 111 | fits: 90 days to maturity, 111 available after Jun 11. | — |
| Calendula | Apr 23 | May 21–Jun 4 | 118 | two-plantings: Plant May 21 and again by Jul 14; both mature before Sep 16. | Jul 14 |
| Cosmos | May 7 | Jun 4–Jun 18 | 83 | fits: 60 days to maturity, 83 available after Jun 4. | Jun 13 |
| Lavender | Mar 12 | Jun 4–Jun 18 | 118 | fits: 90 days to maturity, 118 available after Jun 4. | — |
| Marigolds | Apr 23 | Jun 4–Jun 11 | 83 | fits: 50 days to maturity, 83 available after Jun 4. | Jun 23 |
| Melons | May 21 | Jun 18–Jun 25 | 55 | no-fit: Needs 85 days; Pittsburg has 55 after Jun 18. | — |
| Mint | — | Jun 4–Jun 18 | 118 | fits: 90 days to maturity, 118 available after Jun 4. | — |
| Nasturtiums | May 7 | Jun 4–Jun 11 | 83 | fits: 55 days to maturity, 83 available after Jun 4. | Jun 18 |
| Pole Beans | — | Jun 11–Jun 25 | 76 | fits: 65 days to maturity, 76 available after Jun 11. | — |
| Spaghetti Squash | May 21 | Jun 18–Jun 25 | 62 | no-fit: Needs 90 days; Pittsburg has 62 after Jun 18. | — |
| Sunflowers | — | Jun 4–Jun 18 | 83 | fits: 70 days to maturity, 83 available after Jun 4. | — |
| Tomatillos | Apr 9 | Jun 11–Jun 18 | 62 | head-start: Even planted out Jun 11, the outdoor season is about 13 days short; choose an early variety or grow under cover. | — |
| Watermelon | May 21 | Jun 11–Jun 18 | 62 | head-start: Even planted out Jun 11, the outdoor season is about 18 days short; choose an early variety or grow under cover. | — |
| Yellow Squash | May 21 | Jun 18–Jun 25 | 69 | fits: 55 days to maturity, 69 available after Jun 18. | — |
| Zinnias | May 7 | Jun 4–Jun 18 | 83 | fits: 60 days to maturity, 83 available after Jun 4. | Jun 13 |
Month by month in Pittsburg
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost). |
| March | Start indoors: Chives (Mar 12), Lavender (Mar 12), Onion (Mar 12), Rosemary (Mar 12), Celery (Mar 26), Collards (Mar 26), +5 more. |
| April | Start indoors: Broccoli (Apr 9), Brussel Sprouts (Apr 9), Cabbage (Apr 9), Lettuce (Apr 9), Sage (Apr 9), Swiss Chard (Apr 9), +8 more. Direct sow from: Arugula (Apr 9), Beets (Apr 9), Dill (Apr 9), Peas (Apr 9), Radish (Apr 9), Spinach (Apr 9), +1 more. Plant: Strawberry (Apr 30). |
| May | Start indoors: Bok Choy (May 7), Corn (May 7), Cosmos (May 7), Nasturtiums (May 7), Okra (May 7), Zinnias (May 7), +9 more. Direct sow from: Cilantro (May 7), Turnip (May 7), Carrots (May 14), Potatoes (May 21). Transplant from: Broccoli (May 7), Brussel Sprouts (May 7), Cabbage (May 7), Collards (May 7), Kale (May 7), Lettuce (May 7), +6 more. |
| June | Direct sow from: Sunflowers (Jun 4), Beans (Jun 11), Pole Beans (Jun 11). Transplant from: Cosmos (Jun 4), Lavender (Jun 4), Marigolds (Jun 4), Mint (Jun 4), Nasturtiums (Jun 4), Zinnias (Jun 4), +23 more. Last frost around June 4. Last sowing dates: Brussel Sprouts (Jun 8), Cosmos (Jun 13), Zinnias (Jun 13), Broccoli (Jun 14), Nasturtiums (Jun 18), Okra (Jun 18), +5 more. |
| July | Last sowing dates: Cabbage (Jul 8), Carrots (Jul 8), Beets (Jul 9), Dill (Jul 9), Swiss Chard (Jul 9), Calendula (Jul 14), +8 more. |
| August | Last sowing dates: Arugula (Aug 7), Spinach (Aug 7), Radish (Aug 8). |
| September | Direct sow from: Garlic (Sep 9). First frost around September 9. Last sowing dates: Garlic (Sep 30). |
| October | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
| 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 Pittsburg, NH (ZIP 03592)?
The median last spring frost date for Pittsburg, NH (ZIP code 03592) is around June 4. 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 16; one in ten it runs past June 22.
What is the first fall frost date in Pittsburg, NH?
The median first fall frost date for Pittsburg, NH is around September 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 August 27 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Pittsburg, NH?
The frost-free growing season in Pittsburg is about 97 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 Pittsburg (97 frost-free days, a short season), 29 of 56 planner crops fit outright, 14 get two plantings, 5 need an indoor start, 7 don't reliably mature, 1 crop is perennial.
What USDA hardiness zone is Pittsburg, NH?
Pittsburg, NH is in USDA hardiness zone 4a (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 Pittsburg, NH?
Start tomatoes indoors Apr 30 and plant out Jun 18 in Pittsburg. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Pittsburg?
Two: plant May 7 and again by Jul 19; both mature before Sep 16.
When do I plant garlic in Pittsburg?
Sep 9 to Sep 30; it overwinters and is ready the following summer.
Can I grow Celery in Pittsburg?
Not reliably outdoors. Needs 120 days; Pittsburg has 97 after Jun 11.
Which nearby ZIP has a longer season?
Littleton (ZIP 03561) has 125 frost-free days, 28 more than Pittsburg (ZIP 03592). See Littleton ZIP 03561 frost dates
Nearby and related
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- Frost dates for Auburn, ME 04210 (86.2 mi)
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- When to plant in NH
- When to plant Beans in NH
- When to plant Strawberries in NH
- When to plant Beets in NH
- When to plant Broccoli in NH
- When to plant Carrots in NH
- When to plant Kale in NH
- Look up another ZIP