Frost Dates for Hudson, NH 03051
Last spring frost May 7 · First fall frost October 3 · 149 frost-free days · USDA Zone 6a
ZIP 03051 has about 25,600 people.
Moderate season: 149 frost-free days. Spring frost risk spans April 25–May 20 (25 days). Fall frost risk spans September 22–October 14 (22 days).
Frost probability for 03051
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 20 | May 7 | April 25 |
| Fall (first frost) | September 22 | October 3 | October 14 |
Dates come from NOAA 1971–2000 freeze probabilities at NASHUA 2 NNW (6.2 km away); the 50% date is the median year.
Which crops fit a 149-day season in Hudson
In Hudson (149 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 2 | May 21–May 28 | 107 | fits: 80 days to maturity, 107 available after May 21. | Jun 3 |
| Pepper | Mar 26 | May 21–May 28 | 107 | fits: 75 days to maturity, 107 available after May 21. | Jun 8 |
| Lettuce | Mar 12 | Apr 9–Apr 16 | 184 | two-plantings: Plant Apr 9 and again by Aug 12; both mature before Oct 10. | Aug 12 |
| Carrots | — | Apr 16–Apr 23 | 191 | fits: 70 days to maturity, 191 available after Apr 16. | Aug 1 |
| Cucumber | Apr 16 | May 21–May 28 | 121 | fits: 60 days to maturity, 121 available after May 21. | Jul 7 |
| Beans | — | May 14–May 28 | 135 | two-plantings: Plant May 14 and again by Jul 14; both mature before Sep 26. | Jul 14 |
| Peas | — | Mar 12–May 21 | 212 | fits: 65 days to maturity, 212 available after Mar 12. | Jul 23 |
| Zucchini | Apr 23 | May 21–May 28 | 121 | fits: 55 days to maturity, 121 available after May 21. | Jul 12 |
| Onion | Feb 12 | Apr 9–Apr 23 | 184 | fits: 100 days to maturity, 184 available after Apr 9. | — |
| Spinach | — | Mar 12–Apr 30 | 226 | two-plantings: Plant Mar 12 and again by Aug 31; both mature before Oct 24. | Aug 31 |
| Kale | Feb 26 | Apr 9–Apr 23 | 198 | two-plantings: Plant Apr 9 and again by Aug 16; both mature before Oct 24. | Aug 16 |
| Broccoli | Mar 12 | Apr 9–Apr 23 | 184 | fits: 80 days to maturity, 184 available after Apr 9. | Jul 8 |
| Cabbage | Mar 12 | Apr 9–Apr 23 | 198 | fits: 70 days to maturity, 198 available after Apr 9. | Aug 1 |
| Radish | — | Mar 12–Jun 4 | 212 | two-plantings: Plant Mar 12 and again by Sep 1; both mature before Oct 10. | Sep 1 |
| Beets | — | Mar 12–Jun 4 | 212 | two-plantings: Plant Mar 12 and again by Aug 2; both mature before Oct 10. | Aug 2 |
| Potatoes | — | Apr 23–Apr 30 | 170 | fits: 90 days to maturity, 170 available after Apr 23. | — |
| Garlic | — | Oct 3 | 254 | overwinter: Plant Oct 3 to Oct 24; harvest the following summer. | Oct 24 |
| Strawberry | — | Apr 2–May 28 | 205 | perennial: A perennial: plant Apr 2; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 9 | May 14–May 21 | 121 | fits: 75 days to maturity, 121 available after May 14. | Jun 15 |
| Pumpkin | Apr 23 | May 21–May 21 | 114 | fits: 100 days to maturity, 114 available after May 21. | — |
| Cauliflower | Mar 26 | Apr 30–May 14 | 163 | fits: 75 days to maturity, 163 available after Apr 30. | Jul 13 |
| Swiss Chard | Mar 12 | Apr 23–Apr 23 | 170 | two-plantings: Plant Apr 23 and again by Aug 2; both mature before Oct 10. | Aug 2 |
| Arugula | — | Mar 12–Jun 4 | 226 | two-plantings: Plant Mar 12 and again by Aug 31; both mature before Oct 24. | Aug 31 |
| Brussel Sprouts | Mar 12 | Apr 9–Apr 23 | 198 | fits: 100 days to maturity, 198 available after Apr 9. | Jul 2 |
| Butternut Squash | Apr 23 | May 21–May 28 | 114 | fits: 100 days to maturity, 114 available after May 21. | — |
| Eggplant | Mar 19 | May 21–May 28 | 107 | fits: 70 days to maturity, 107 available after May 21. | Jun 13 |
| Okra | Apr 9 | May 14–May 21 | 128 | two-plantings: Plant May 14 and again by Jul 12; both mature before Sep 19. | Jul 12 |
| Basil | Apr 2 | May 28–May 28 | 114 | fits: 60 days to maturity, 114 available after May 28. | Jul 7 |
| Cilantro | — | Apr 9–Apr 30 | 184 | two-plantings: Plant Apr 9 and again by Aug 7; both mature before Oct 10. | Aug 7 |
| Parsley | Feb 26 | May 14–May 21 | 149 | fits: 70 days to maturity, 149 available after May 14. | Jul 18 |
| Celery | Feb 26 | May 14–May 28 | 149 | fits: 120 days to maturity, 149 available after May 14. | May 29 |
| Scallions | Feb 26 | Apr 9–Apr 23 | 198 | two-plantings: Plant Apr 9 and again by Aug 11; both mature before Oct 24. | Aug 11 |
| Turnip | — | Apr 9–Apr 23 | 198 | two-plantings: Plant Apr 9 and again by Aug 21; both mature before Oct 24. | Aug 21 |
| Kohlrabi | — | Mar 26–Apr 9 | 212 | two-plantings: Plant Mar 26 and again by Aug 16; both mature before Oct 24. | Aug 16 |
| Bok Choy | Apr 9 | Apr 30–May 7 | 163 | two-plantings: Plant Apr 30 and again by Aug 12; both mature before Oct 10. | Aug 12 |
| Collards | Feb 26 | Apr 9–Apr 23 | 198 | two-plantings: Plant Apr 9 and again by Aug 11; both mature before Oct 24. | Aug 11 |
| Cantaloupe | Apr 23 | May 21–May 28 | 107 | fits: 85 days to maturity, 107 available after May 21. | May 29 |
| Chives | Feb 12 | May 14–May 21 | 163 | fits: 90 days to maturity, 163 available after May 14. | — |
| Dill | — | Mar 12–Jun 4 | 212 | two-plantings: Plant Mar 12 and again by Aug 2; both mature before Oct 10. | Aug 2 |
| Oregano | Feb 26 | May 14–May 21 | 163 | fits: 80 days to maturity, 163 available after May 14. | — |
| Rosemary | Feb 12 | May 14–May 21 | 149 | fits: 80 days to maturity, 149 available after May 14. | — |
| Sage | Mar 12 | May 14–May 21 | 163 | fits: 75 days to maturity, 163 available after May 14. | — |
| Thyme | Feb 26 | May 14–May 21 | 163 | fits: 90 days to maturity, 163 available after May 14. | — |
| Calendula | Mar 26 | Apr 23–May 7 | 170 | two-plantings: Plant Apr 23 and again by Aug 7; both mature before Oct 10. | Aug 7 |
| Cosmos | Apr 9 | May 7–May 21 | 135 | two-plantings: Plant May 7 and again by Jul 7; both mature before Sep 19. | Jul 7 |
| Lavender | Feb 12 | May 7–May 21 | 170 | fits: 90 days to maturity, 170 available after May 7. | — |
| Marigolds | Mar 26 | May 7–May 14 | 135 | two-plantings: Plant May 7 and again by Jul 17; both mature before Sep 19. | Jul 17 |
| Melons | Apr 23 | May 21–May 28 | 107 | fits: 85 days to maturity, 107 available after May 21. | May 29 |
| Mint | — | May 7–May 21 | 170 | fits: 90 days to maturity, 170 available after May 7. | — |
| Nasturtiums | Apr 9 | May 7–May 14 | 135 | two-plantings: Plant May 7 and again by Jul 12; both mature before Sep 19. | Jul 12 |
| Pole Beans | — | May 14–May 28 | 128 | fits: 65 days to maturity, 128 available after May 14. | Jul 2 |
| Spaghetti Squash | Apr 23 | May 21–May 28 | 114 | fits: 90 days to maturity, 114 available after May 21. | May 31 |
| Sunflowers | — | May 7–May 21 | 135 | fits: 70 days to maturity, 135 available after May 7. | Jun 27 |
| Tomatillos | Mar 12 | May 14–May 21 | 114 | fits: 75 days to maturity, 114 available after May 14. | Jun 8 |
| Watermelon | Apr 23 | May 14–May 21 | 114 | fits: 80 days to maturity, 114 available after May 14. | Jun 3 |
| Yellow Squash | Apr 23 | May 21–May 28 | 121 | fits: 55 days to maturity, 121 available after May 21. | Jul 12 |
| Zinnias | Apr 9 | May 7–May 21 | 135 | two-plantings: Plant May 7 and again by Jul 7; both mature before Sep 19. | Jul 7 |
Month by month in Hudson
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 12), Lavender (Feb 12), Onion (Feb 12), Rosemary (Feb 12), Celery (Feb 26), Collards (Feb 26), +5 more. |
| March | Start indoors: Broccoli (Mar 12), Brussel Sprouts (Mar 12), Cabbage (Mar 12), Lettuce (Mar 12), Sage (Mar 12), Swiss Chard (Mar 12), +6 more. Direct sow from: Arugula (Mar 12), Beets (Mar 12), Dill (Mar 12), Peas (Mar 12), Radish (Mar 12), Spinach (Mar 12), +1 more. |
| April | Start indoors: Basil (Apr 2), Tomato (Apr 2), Bok Choy (Apr 9), Corn (Apr 9), Cosmos (Apr 9), Nasturtiums (Apr 9), +11 more. Direct sow from: Cilantro (Apr 9), Turnip (Apr 9), Carrots (Apr 16), Potatoes (Apr 23). Transplant from: Broccoli (Apr 9), Brussel Sprouts (Apr 9), Cabbage (Apr 9), Collards (Apr 9), Kale (Apr 9), Lettuce (Apr 9), +6 more. Plant: Strawberry (Apr 2). |
| May | Direct sow from: Sunflowers (May 7), Beans (May 14), Pole Beans (May 14). Transplant from: Cosmos (May 7), Lavender (May 7), Marigolds (May 7), Mint (May 7), Nasturtiums (May 7), Zinnias (May 7), +23 more. Last frost around May 7. Last sowing dates: Cantaloupe (May 29), Celery (May 29), Melons (May 29), Spaghetti Squash (May 31). |
| June | Last sowing dates: Tomato (Jun 3), Watermelon (Jun 3), Pepper (Jun 8), Tomatillos (Jun 8), Eggplant (Jun 13), Corn (Jun 15), +1 more. |
| July | Last sowing dates: Brussel Sprouts (Jul 2), Pole Beans (Jul 2), Basil (Jul 7), Cosmos (Jul 7), Cucumber (Jul 7), Zinnias (Jul 7), +10 more. |
| August | Last sowing dates: Cabbage (Aug 1), Carrots (Aug 1), Beets (Aug 2), Dill (Aug 2), Swiss Chard (Aug 2), Calendula (Aug 7), +10 more. |
| September | Last sowing dates: Radish (Sep 1). |
| October | Direct sow from: Garlic (Oct 3). First frost around October 3. Last sowing dates: Garlic (Oct 24). |
| 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 Hudson, NH (ZIP 03051)?
The median last spring frost date for Hudson, NH (ZIP code 03051) is around May 7. 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 20.
What is the first fall frost date in Hudson, NH?
The median first fall frost date for Hudson, NH is around October 3. 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 22 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Hudson, NH?
The frost-free growing season in Hudson is about 149 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 Hudson (149 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 Hudson, NH?
Hudson, 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 Hudson, NH?
Start tomatoes indoors Apr 2 and plant out May 21 in Hudson. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Hudson?
Two: plant Apr 9 and again by Aug 12; both mature before Oct 10.
When do I plant garlic in Hudson?
Oct 3 to Oct 24; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Pelham (ZIP 03076) has 164 frost-free days, 15 more than Hudson (ZIP 03051). See Pelham ZIP 03076 frost dates
Nearby and related
- Frost dates for Nashua, NH 03060 (3.1 mi)
- Frost dates for Pelham, NH 03076 (4.7 mi)
- Frost dates for Nashua, NH 03062 (5.3 mi)
- Frost dates for Windham, NH 03087 (6.2 mi)
- Frost dates for Tyngsboro, MA 01879 (6.8 mi)
- When to plant in NH
- When to plant Peppers in NH
- When to plant Cucumbers in NH
- When to plant Zucchini in NH
- When to plant Butternut Squash in NH
- When to plant Basil in NH
- When to plant Sweet Corn in NH
- Look up another ZIP