Frost Dates for Lebanon, NH 03766
Last spring frost May 28 · First fall frost September 20 · 115 frost-free days · USDA Zone 5a
ZIP 03766 has about 11,200 people.
Short season: 115 frost-free days. Spring frost risk spans May 11–June 14 (34 days). Fall frost risk spans September 7–October 4 (27 days).
Frost probability for 03766
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 14 | May 28 | May 11 |
| Fall (first frost) | September 7 | September 20 | October 4 |
Dates come from NOAA 1971–2000 freeze probabilities at WOODSTOCK (21.7 km away); the 50% date is the median year.
Which crops fit a 115-day season in Lebanon
In Lebanon (115 frost-free days, a short season), 32 of 56 planner crops fit outright, 15 get two plantings, 8 need an indoor start, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 23 | Jun 11–Jun 18 | 73 | head-start: Even planted out Jun 11, the outdoor season is about 7 days short; choose an early variety or grow under cover. | — |
| Pepper | Apr 16 | Jun 11–Jun 18 | 73 | head-start: Even planted out Jun 11, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Lettuce | Apr 2 | Apr 30–May 7 | 150 | two-plantings: Plant Apr 30 and again by Jul 30; both mature before Sep 27. | Jul 30 |
| Carrots | — | May 7–May 14 | 157 | fits: 70 days to maturity, 157 available after May 7. | Jul 19 |
| Cucumber | May 7 | Jun 11–Jun 18 | 87 | fits: 60 days to maturity, 87 available after Jun 11. | Jun 24 |
| Beans | — | Jun 4–Jun 18 | 101 | fits: 60 days to maturity, 101 available after Jun 4. | Jul 1 |
| Peas | — | Apr 2–Jun 11 | 178 | fits: 65 days to maturity, 178 available after Apr 2. | Jul 10 |
| Zucchini | May 14 | Jun 11–Jun 18 | 87 | fits: 55 days to maturity, 87 available after Jun 11. | Jun 29 |
| Onion | Mar 5 | Apr 30–May 14 | 150 | fits: 100 days to maturity, 150 available after Apr 30. | — |
| Spinach | — | Apr 2–May 21 | 192 | two-plantings: Plant Apr 2 and again by Aug 18; both mature before Oct 11. | Aug 18 |
| Kale | Mar 19 | Apr 30–May 14 | 164 | two-plantings: Plant Apr 30 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Broccoli | Apr 2 | Apr 30–May 14 | 150 | fits: 80 days to maturity, 150 available after Apr 30. | Jun 25 |
| Cabbage | Apr 2 | Apr 30–May 14 | 164 | fits: 70 days to maturity, 164 available after Apr 30. | Jul 19 |
| Radish | — | Apr 2–Jun 25 | 178 | two-plantings: Plant Apr 2 and again by Aug 19; both mature before Sep 27. | Aug 19 |
| Beets | — | Apr 2–Jun 25 | 178 | two-plantings: Plant Apr 2 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Potatoes | — | May 14–May 21 | 136 | fits: 90 days to maturity, 136 available after May 14. | — |
| Garlic | — | Sep 20 | 220 | overwinter: Plant Sep 20 to Oct 11; harvest the following summer. | Oct 11 |
| Strawberry | — | Apr 23–Jun 18 | 171 | perennial: A perennial: plant Apr 23; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 30 | Jun 4–Jun 11 | 87 | fits: 75 days to maturity, 87 available after Jun 4. | — |
| Pumpkin | May 14 | Jun 11–Jun 11 | 80 | head-start: Even planted out Jun 11, the outdoor season is about 20 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 16 | May 21–Jun 4 | 129 | fits: 75 days to maturity, 129 available after May 21. | Jun 30 |
| Swiss Chard | Apr 2 | May 14–May 14 | 136 | two-plantings: Plant May 14 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Arugula | — | Apr 2–Jun 25 | 192 | two-plantings: Plant Apr 2 and again by Aug 18; both mature before Oct 11. | Aug 18 |
| Brussel Sprouts | Apr 2 | Apr 30–May 14 | 164 | fits: 100 days to maturity, 164 available after Apr 30. | Jun 19 |
| Butternut Squash | May 14 | Jun 11–Jun 18 | 80 | head-start: Even planted out Jun 11, the outdoor season is about 20 days short; choose an early variety or grow under cover. | — |
| Eggplant | Apr 9 | Jun 11–Jun 18 | 73 | fits: 70 days to maturity, 73 available after Jun 11. | — |
| Okra | Apr 30 | Jun 4–Jun 11 | 94 | fits: 55 days to maturity, 94 available after Jun 4. | Jun 29 |
| Basil | Apr 23 | Jun 18–Jun 18 | 80 | fits: 60 days to maturity, 80 available after Jun 18. | Jun 24 |
| Cilantro | — | Apr 30–May 21 | 150 | two-plantings: Plant Apr 30 and again by Jul 25; both mature before Sep 27. | Jul 25 |
| Parsley | Mar 19 | Jun 4–Jun 11 | 115 | fits: 70 days to maturity, 115 available after Jun 4. | Jul 5 |
| Celery | Mar 19 | Jun 4–Jun 18 | 115 | head-start: Even planted out Jun 4, the outdoor season is about 5 days short; choose an early variety or grow under cover. | — |
| Scallions | Mar 19 | Apr 30–May 14 | 164 | two-plantings: Plant Apr 30 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Turnip | — | Apr 30–May 14 | 164 | two-plantings: Plant Apr 30 and again by Aug 8; both mature before Oct 11. | Aug 8 |
| Kohlrabi | — | Apr 16–Apr 30 | 178 | two-plantings: Plant Apr 16 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Bok Choy | Apr 30 | May 21–May 28 | 129 | two-plantings: Plant May 21 and again by Jul 30; both mature before Sep 27. | Jul 30 |
| Collards | Mar 19 | Apr 30–May 14 | 164 | two-plantings: Plant Apr 30 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Cantaloupe | May 14 | Jun 11–Jun 18 | 73 | head-start: Even planted out Jun 11, the outdoor season is about 12 days short; choose an early variety or grow under cover. | — |
| Chives | Mar 5 | Jun 4–Jun 11 | 129 | fits: 90 days to maturity, 129 available after Jun 4. | — |
| Dill | — | Apr 2–Jun 25 | 178 | two-plantings: Plant Apr 2 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Oregano | Mar 19 | Jun 4–Jun 11 | 129 | fits: 80 days to maturity, 129 available after Jun 4. | — |
| Rosemary | Mar 5 | Jun 4–Jun 11 | 115 | fits: 80 days to maturity, 115 available after Jun 4. | — |
| Sage | Apr 2 | Jun 4–Jun 11 | 129 | fits: 75 days to maturity, 129 available after Jun 4. | — |
| Thyme | Mar 19 | Jun 4–Jun 11 | 129 | fits: 90 days to maturity, 129 available after Jun 4. | — |
| Calendula | Apr 16 | May 14–May 28 | 136 | two-plantings: Plant May 14 and again by Jul 25; both mature before Sep 27. | Jul 25 |
| Cosmos | Apr 30 | May 28–Jun 11 | 101 | fits: 60 days to maturity, 101 available after May 28. | Jun 24 |
| Lavender | Mar 5 | May 28–Jun 11 | 136 | fits: 90 days to maturity, 136 available after May 28. | — |
| Marigolds | Apr 16 | May 28–Jun 4 | 101 | fits: 50 days to maturity, 101 available after May 28. | Jul 4 |
| Melons | May 14 | Jun 11–Jun 18 | 73 | head-start: Even planted out Jun 11, the outdoor season is about 12 days short; choose an early variety or grow under cover. | — |
| Mint | — | May 28–Jun 11 | 136 | fits: 90 days to maturity, 136 available after May 28. | — |
| Nasturtiums | Apr 30 | May 28–Jun 4 | 101 | fits: 55 days to maturity, 101 available after May 28. | Jun 29 |
| Pole Beans | — | Jun 4–Jun 18 | 94 | fits: 65 days to maturity, 94 available after Jun 4. | Jun 19 |
| Spaghetti Squash | May 14 | Jun 11–Jun 18 | 80 | head-start: Even planted out Jun 11, the outdoor season is about 10 days short; choose an early variety or grow under cover. | — |
| Sunflowers | — | May 28–Jun 11 | 101 | fits: 70 days to maturity, 101 available after May 28. | Jun 14 |
| Tomatillos | Apr 2 | Jun 4–Jun 11 | 80 | fits: 75 days to maturity, 80 available after Jun 4. | — |
| Watermelon | May 14 | Jun 4–Jun 11 | 80 | fits: 80 days to maturity, 80 available after Jun 4. | — |
| Yellow Squash | May 14 | Jun 11–Jun 18 | 87 | fits: 55 days to maturity, 87 available after Jun 11. | Jun 29 |
| Zinnias | Apr 30 | May 28–Jun 11 | 101 | fits: 60 days to maturity, 101 available after May 28. | Jun 24 |
Month by month in Lebanon
| 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 5), Lavender (Mar 5), Onion (Mar 5), Rosemary (Mar 5), Celery (Mar 19), Collards (Mar 19), +5 more. |
| April | Start indoors: Broccoli (Apr 2), Brussel Sprouts (Apr 2), Cabbage (Apr 2), Lettuce (Apr 2), Sage (Apr 2), Swiss Chard (Apr 2), +14 more. Direct sow from: Arugula (Apr 2), Beets (Apr 2), Dill (Apr 2), Peas (Apr 2), Radish (Apr 2), Spinach (Apr 2), +3 more. Transplant from: Broccoli (Apr 30), Brussel Sprouts (Apr 30), Cabbage (Apr 30), Collards (Apr 30), Kale (Apr 30), Lettuce (Apr 30), +2 more. Plant: Strawberry (Apr 23). |
| May | Start indoors: Cucumber (May 7), Butternut Squash (May 14), Cantaloupe (May 14), Melons (May 14), Pumpkin (May 14), Spaghetti Squash (May 14), +3 more. Direct sow from: Carrots (May 7), Potatoes (May 14), Sunflowers (May 28). Transplant from: Calendula (May 14), Swiss Chard (May 14), Bok Choy (May 21), Cauliflower (May 21), Cosmos (May 28), Lavender (May 28), +4 more. Last frost around May 28. |
| June | Direct sow from: Beans (Jun 4), Pole Beans (Jun 4). Transplant from: Celery (Jun 4), Chives (Jun 4), Corn (Jun 4), Okra (Jun 4), Oregano (Jun 4), Parsley (Jun 4), +17 more. Last sowing dates: Sunflowers (Jun 14), Brussel Sprouts (Jun 19), Pole Beans (Jun 19), Basil (Jun 24), Cosmos (Jun 24), Cucumber (Jun 24), +7 more. |
| July | Last sowing dates: Beans (Jul 1), Marigolds (Jul 4), Parsley (Jul 5), Peas (Jul 10), Cabbage (Jul 19), Carrots (Jul 19), +9 more. |
| August | Last sowing dates: Kale (Aug 3), Kohlrabi (Aug 3), Turnip (Aug 8), Arugula (Aug 18), Spinach (Aug 18), Radish (Aug 19). |
| September | Direct sow from: Garlic (Sep 20). First frost around September 20. |
| October | Last sowing dates: Garlic (Oct 11). |
| 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 Lebanon, NH (ZIP 03766)?
The median last spring frost date for Lebanon, NH (ZIP code 03766) is around May 28. 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 11; one in ten it runs past June 14.
What is the first fall frost date in Lebanon, NH?
The median first fall frost date for Lebanon, NH is around September 20. 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 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Lebanon, NH?
The frost-free growing season in Lebanon is about 115 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 Lebanon (115 frost-free days, a short season), 32 of 56 planner crops fit outright, 15 get two plantings, 8 need an indoor start, 1 crop is perennial.
What USDA hardiness zone is Lebanon, NH?
Lebanon, NH is in USDA hardiness zone 5a (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 Lebanon, NH?
Start tomatoes indoors Apr 23 and plant out Jun 11 in Lebanon. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Lebanon?
Two: plant Apr 30 and again by Jul 30; both mature before Sep 27.
When do I plant garlic in Lebanon?
Sep 20 to Oct 11; it overwinters and is ready the following summer.
Can I grow Celery in Lebanon?
Yes, with help. Even planted out Jun 4, the outdoor season is about 5 days short; choose an early variety or grow under cover.
Which nearby ZIP has a longer season?
Rutland (ZIP 05701) has 138 frost-free days, 23 more than Lebanon (ZIP 03766). See Rutland ZIP 05701 frost dates
Nearby and related
- Frost dates for Hanover, NH 03755 (6.5 mi)
- Frost dates for Claremont, NH 03743 (19.4 mi)
- Frost dates for Bristol, NH 03222 (22.8 mi)
- Frost dates for Rutland, VT 05701 (33.7 mi)
- Frost dates for Tilton, NH 03276 (36.1 mi)
- 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