Frost Dates for Suncook, NH 03275
Last spring frost May 16 · First fall frost September 23 · 130 frost-free days · USDA Zone 6a
ZIP 03275 has about 12,200 people.
Moderate season: 130 frost-free days. Spring frost risk spans May 3–May 28 (25 days). Fall frost risk spans September 9–October 5 (26 days).
Frost probability for 03275
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 28 | May 16 | May 3 |
| Fall (first frost) | September 9 | September 23 | October 5 |
Dates come from NOAA 1971–2000 freeze probabilities at EPPING (30.7 km away); the 50% date is the median year.
Which crops fit a 130-day season in Suncook
In Suncook (130 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 11 | May 30–Jun 6 | 88 | fits: 80 days to maturity, 88 available after May 30. | — |
| Pepper | Apr 4 | May 30–Jun 6 | 88 | fits: 75 days to maturity, 88 available after May 30. | — |
| Lettuce | Mar 21 | Apr 18–Apr 25 | 165 | two-plantings: Plant Apr 18 and again by Aug 2; both mature before Sep 30. | Aug 2 |
| Carrots | — | Apr 25–May 2 | 172 | fits: 70 days to maturity, 172 available after Apr 25. | Jul 22 |
| Cucumber | Apr 25 | May 30–Jun 6 | 102 | fits: 60 days to maturity, 102 available after May 30. | Jun 27 |
| Beans | — | May 23–Jun 6 | 116 | fits: 60 days to maturity, 116 available after May 23. | Jul 4 |
| Peas | — | Mar 21–May 30 | 193 | fits: 65 days to maturity, 193 available after Mar 21. | Jul 13 |
| Zucchini | May 2 | May 30–Jun 6 | 102 | fits: 55 days to maturity, 102 available after May 30. | Jul 2 |
| Onion | Feb 21 | Apr 18–May 2 | 165 | fits: 100 days to maturity, 165 available after Apr 18. | — |
| Spinach | — | Mar 21–May 9 | 207 | two-plantings: Plant Mar 21 and again by Aug 21; both mature before Oct 14. | Aug 21 |
| Kale | Mar 7 | Apr 18–May 2 | 179 | two-plantings: Plant Apr 18 and again by Aug 6; both mature before Oct 14. | Aug 6 |
| Broccoli | Mar 21 | Apr 18–May 2 | 165 | fits: 80 days to maturity, 165 available after Apr 18. | Jun 28 |
| Cabbage | Mar 21 | Apr 18–May 2 | 179 | fits: 70 days to maturity, 179 available after Apr 18. | Jul 22 |
| Radish | — | Mar 21–Jun 13 | 193 | two-plantings: Plant Mar 21 and again by Aug 22; both mature before Sep 30. | Aug 22 |
| Beets | — | Mar 21–Jun 13 | 193 | two-plantings: Plant Mar 21 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Potatoes | — | May 2–May 9 | 151 | fits: 90 days to maturity, 151 available after May 2. | — |
| Garlic | — | Sep 23 | 235 | overwinter: Plant Sep 23 to Oct 14; harvest the following summer. | Oct 14 |
| Strawberry | — | Apr 11–Jun 6 | 186 | perennial: A perennial: plant Apr 11; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 18 | May 23–May 30 | 102 | fits: 75 days to maturity, 102 available after May 23. | Jun 5 |
| Pumpkin | May 2 | May 30–May 30 | 95 | head-start: Even planted out May 30, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 4 | May 9–May 23 | 144 | fits: 75 days to maturity, 144 available after May 9. | Jul 3 |
| Swiss Chard | Mar 21 | May 2–May 2 | 151 | two-plantings: Plant May 2 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Arugula | — | Mar 21–Jun 13 | 207 | two-plantings: Plant Mar 21 and again by Aug 21; both mature before Oct 14. | Aug 21 |
| Brussel Sprouts | Mar 21 | Apr 18–May 2 | 179 | fits: 100 days to maturity, 179 available after Apr 18. | Jun 22 |
| Butternut Squash | May 2 | May 30–Jun 6 | 95 | head-start: Even planted out May 30, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Eggplant | Mar 28 | May 30–Jun 6 | 88 | fits: 70 days to maturity, 88 available after May 30. | Jun 3 |
| Okra | Apr 18 | May 23–May 30 | 109 | fits: 55 days to maturity, 109 available after May 23. | Jul 2 |
| Basil | Apr 11 | Jun 6–Jun 6 | 95 | fits: 60 days to maturity, 95 available after Jun 6. | Jun 27 |
| Cilantro | — | Apr 18–May 9 | 165 | two-plantings: Plant Apr 18 and again by Jul 28; both mature before Sep 30. | Jul 28 |
| Parsley | Mar 7 | May 23–May 30 | 130 | fits: 70 days to maturity, 130 available after May 23. | Jul 8 |
| Celery | Mar 7 | May 23–Jun 6 | 130 | fits: 120 days to maturity, 130 available after May 23. | — |
| Scallions | Mar 7 | Apr 18–May 2 | 179 | two-plantings: Plant Apr 18 and again by Aug 1; both mature before Oct 14. | Aug 1 |
| Turnip | — | Apr 18–May 2 | 179 | two-plantings: Plant Apr 18 and again by Aug 11; both mature before Oct 14. | Aug 11 |
| Kohlrabi | — | Apr 4–Apr 18 | 193 | two-plantings: Plant Apr 4 and again by Aug 6; both mature before Oct 14. | Aug 6 |
| Bok Choy | Apr 18 | May 9–May 16 | 144 | two-plantings: Plant May 9 and again by Aug 2; both mature before Sep 30. | Aug 2 |
| Collards | Mar 7 | Apr 18–May 2 | 179 | two-plantings: Plant Apr 18 and again by Aug 1; both mature before Oct 14. | Aug 1 |
| Cantaloupe | May 2 | May 30–Jun 6 | 88 | fits: 85 days to maturity, 88 available after May 30. | — |
| Chives | Feb 21 | May 23–May 30 | 144 | fits: 90 days to maturity, 144 available after May 23. | — |
| Dill | — | Mar 21–Jun 13 | 193 | two-plantings: Plant Mar 21 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Oregano | Mar 7 | May 23–May 30 | 144 | fits: 80 days to maturity, 144 available after May 23. | — |
| Rosemary | Feb 21 | May 23–May 30 | 130 | fits: 80 days to maturity, 130 available after May 23. | — |
| Sage | Mar 21 | May 23–May 30 | 144 | fits: 75 days to maturity, 144 available after May 23. | — |
| Thyme | Mar 7 | May 23–May 30 | 144 | fits: 90 days to maturity, 144 available after May 23. | — |
| Calendula | Apr 4 | May 2–May 16 | 151 | two-plantings: Plant May 2 and again by Jul 28; both mature before Sep 30. | Jul 28 |
| Cosmos | Apr 18 | May 16–May 30 | 116 | fits: 60 days to maturity, 116 available after May 16. | Jun 27 |
| Lavender | Feb 21 | May 16–May 30 | 151 | fits: 90 days to maturity, 151 available after May 16. | — |
| Marigolds | Apr 4 | May 16–May 23 | 116 | two-plantings: Plant May 16 and again by Jul 7; both mature before Sep 9. | Jul 7 |
| Melons | May 2 | May 30–Jun 6 | 88 | fits: 85 days to maturity, 88 available after May 30. | — |
| Mint | — | May 16–May 30 | 151 | fits: 90 days to maturity, 151 available after May 16. | — |
| Nasturtiums | Apr 18 | May 16–May 23 | 116 | fits: 55 days to maturity, 116 available after May 16. | Jul 2 |
| Pole Beans | — | May 23–Jun 6 | 109 | fits: 65 days to maturity, 109 available after May 23. | Jun 22 |
| Spaghetti Squash | May 2 | May 30–Jun 6 | 95 | fits: 90 days to maturity, 95 available after May 30. | — |
| Sunflowers | — | May 16–May 30 | 116 | fits: 70 days to maturity, 116 available after May 16. | Jun 17 |
| Tomatillos | Mar 21 | May 23–May 30 | 95 | fits: 75 days to maturity, 95 available after May 23. | May 29 |
| Watermelon | May 2 | May 23–May 30 | 95 | fits: 80 days to maturity, 95 available after May 23. | May 24 |
| Yellow Squash | May 2 | May 30–Jun 6 | 102 | fits: 55 days to maturity, 102 available after May 30. | Jul 2 |
| Zinnias | Apr 18 | May 16–May 30 | 116 | fits: 60 days to maturity, 116 available after May 16. | Jun 27 |
Month by month in Suncook
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 21), Lavender (Feb 21), Onion (Feb 21), Rosemary (Feb 21). |
| March | Start indoors: Celery (Mar 7), Collards (Mar 7), Kale (Mar 7), Oregano (Mar 7), Parsley (Mar 7), Scallions (Mar 7), +9 more. Direct sow from: Arugula (Mar 21), Beets (Mar 21), Dill (Mar 21), Peas (Mar 21), Radish (Mar 21), Spinach (Mar 21). |
| April | Start indoors: Calendula (Apr 4), Cauliflower (Apr 4), Marigolds (Apr 4), Pepper (Apr 4), Basil (Apr 11), Tomato (Apr 11), +7 more. Direct sow from: Kohlrabi (Apr 4), Cilantro (Apr 18), Turnip (Apr 18), Carrots (Apr 25). Transplant from: Broccoli (Apr 18), Brussel Sprouts (Apr 18), Cabbage (Apr 18), Collards (Apr 18), Kale (Apr 18), Lettuce (Apr 18), +2 more. Plant: Strawberry (Apr 11). |
| May | Start indoors: Butternut Squash (May 2), Cantaloupe (May 2), Melons (May 2), Pumpkin (May 2), Spaghetti Squash (May 2), Watermelon (May 2), +2 more. Direct sow from: Potatoes (May 2), Sunflowers (May 16), Beans (May 23), Pole Beans (May 23). Transplant from: Calendula (May 2), Swiss Chard (May 2), Bok Choy (May 9), Cauliflower (May 9), Cosmos (May 16), Lavender (May 16), +26 more. Last frost around May 16. Last sowing dates: Watermelon (May 24), Tomatillos (May 29). |
| June | Transplant from: Basil (Jun 6). Last sowing dates: Eggplant (Jun 3), Corn (Jun 5), Sunflowers (Jun 17), Brussel Sprouts (Jun 22), Pole Beans (Jun 22), Basil (Jun 27), +4 more. |
| July | Last sowing dates: Nasturtiums (Jul 2), Okra (Jul 2), Yellow Squash (Jul 2), Zucchini (Jul 2), Cauliflower (Jul 3), Beans (Jul 4), +10 more. |
| August | Last sowing dates: Collards (Aug 1), Scallions (Aug 1), Bok Choy (Aug 2), Lettuce (Aug 2), Kale (Aug 6), Kohlrabi (Aug 6), +4 more. |
| September | Direct sow from: Garlic (Sep 23). First frost around September 23. |
| October | Last sowing dates: Garlic (Oct 14). |
| 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 Suncook, NH (ZIP 03275)?
The median last spring frost date for Suncook, NH (ZIP code 03275) is around May 16. 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 3; one in ten it runs past May 28.
What is the first fall frost date in Suncook, NH?
The median first fall frost date for Suncook, NH is around September 23. 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 9 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Suncook, NH?
The frost-free growing season in Suncook is about 130 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 Suncook (130 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 Suncook, NH?
Suncook, NH 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 Suncook, NH?
Start tomatoes indoors Apr 11 and plant out May 30 in Suncook. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Suncook?
Two: plant Apr 18 and again by Aug 2; both mature before Sep 30.
When do I plant garlic in Suncook?
Sep 23 to Oct 14; it overwinters and is ready the following summer.
Can I grow Butternut Squash in Suncook?
Yes, with help. Even planted out May 30, the outdoor season is about 5 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Hooksett (ZIP 03106) has 138 frost-free days, 8 more than Suncook (ZIP 03275). See Hooksett ZIP 03106 frost dates
Nearby and related
- Frost dates for Hooksett, NH 03106 (6.2 mi)
- Frost dates for Concord, NH 03301 (7.7 mi)
- Frost dates for Auburn, NH 03032 (12.3 mi)
- Frost dates for Goffstown, NH 03045 (12.3 mi)
- Frost dates for Raymond, NH 03077 (14.1 mi)
- When to plant in NH
- When to plant Peppers in NH
- When to plant Cucumbers in NH
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- When to plant Butternut Squash in NH
- When to plant Basil in NH
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- Look up another ZIP