Frost Dates for Plymouth, MA 02360
Last spring frost April 25 · First fall frost October 17 · 175 frost-free days · USDA Zone 7a
ZIP 02360 has about 63,700 people.
Moderate season: 175 frost-free days. Spring frost risk spans April 15–May 7 (22 days). Fall frost risk spans October 2–November 1 (30 days).
Frost probability for 02360
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 7 | April 25 | April 15 |
| Fall (first frost) | October 2 | October 17 | November 1 |
Dates come from NOAA 1971–2000 freeze probabilities at E WAREHAM (13.0 km away); the 50% date is the median year.
Which crops fit a 175-day season in Plymouth
In Plymouth (175 frost-free days, a moderate season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Mar 21 | May 9–May 16 | 133 | fits: 80 days to maturity, 133 available after May 9. | Jun 17 |
| Pepper | Mar 14 | May 9–May 16 | 133 | fits: 75 days to maturity, 133 available after May 9. | Jun 22 |
| Lettuce | Feb 28 | Mar 28–Apr 4 | 210 | two-plantings: Plant Mar 28 and again by Aug 26; both mature before Oct 24. | Aug 26 |
| Carrots | — | Apr 4–Apr 11 | 217 | fits: 70 days to maturity, 217 available after Apr 4. | Aug 15 |
| Cucumber | Apr 4 | May 9–May 16 | 147 | two-plantings: Plant May 9 and again by Jul 21; both mature before Oct 3. | Jul 21 |
| Beans | — | May 2–May 16 | 161 | two-plantings: Plant May 2 and again by Jul 28; both mature before Oct 10. | Jul 28 |
| Peas | — | Feb 28–May 9 | 238 | fits: 65 days to maturity, 238 available after Feb 28. | Aug 6 |
| Zucchini | Apr 11 | May 9–May 16 | 147 | two-plantings: Plant May 9 and again by Jul 26; both mature before Oct 3. | Jul 26 |
| Onion | Jan 31 | Mar 28–Apr 11 | 210 | fits: 100 days to maturity, 210 available after Mar 28. | — |
| Spinach | — | Feb 28–Apr 18 | 252 | two-plantings: Plant Feb 28 and again by Sep 14; both mature before Nov 7. | Sep 14 |
| Kale | Feb 14 | Mar 28–Apr 11 | 224 | two-plantings: Plant Mar 28 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Broccoli | Feb 28 | Mar 28–Apr 11 | 210 | fits: 80 days to maturity, 210 available after Mar 28. | Jul 22 |
| Cabbage | Feb 28 | Mar 28–Apr 11 | 224 | fits: 70 days to maturity, 224 available after Mar 28. | Aug 15 |
| Radish | — | Feb 28–May 23 | 238 | two-plantings: Plant Feb 28 and again by Sep 15; both mature before Oct 24. | Sep 15 |
| Beets | — | Feb 28–May 23 | 238 | two-plantings: Plant Feb 28 and again by Aug 16; both mature before Oct 24. | Aug 16 |
| Potatoes | — | Apr 11–Apr 18 | 196 | fits: 90 days to maturity, 196 available after Apr 11. | — |
| Garlic | — | Oct 17 | 280 | overwinter: Plant Oct 17 to Nov 7; harvest the following summer. | Nov 7 |
| Strawberry | — | Mar 21–May 16 | 231 | perennial: A perennial: plant Mar 21; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 28 | May 2–May 9 | 147 | fits: 75 days to maturity, 147 available after May 2. | Jun 29 |
| Pumpkin | Apr 11 | May 9–May 9 | 140 | fits: 100 days to maturity, 140 available after May 9. | Jun 4 |
| Cauliflower | Mar 14 | Apr 18–May 2 | 189 | fits: 75 days to maturity, 189 available after Apr 18. | Jul 27 |
| Swiss Chard | Feb 28 | Apr 11–Apr 11 | 196 | two-plantings: Plant Apr 11 and again by Aug 16; both mature before Oct 24. | Aug 16 |
| Arugula | — | Feb 28–May 23 | 252 | two-plantings: Plant Feb 28 and again by Sep 14; both mature before Nov 7. | Sep 14 |
| Brussel Sprouts | Feb 28 | Mar 28–Apr 11 | 224 | fits: 100 days to maturity, 224 available after Mar 28. | Jul 16 |
| Butternut Squash | Apr 11 | May 9–May 16 | 140 | fits: 100 days to maturity, 140 available after May 9. | Jun 4 |
| Eggplant | Mar 7 | May 9–May 16 | 133 | fits: 70 days to maturity, 133 available after May 9. | Jun 27 |
| Okra | Mar 28 | May 2–May 9 | 154 | two-plantings: Plant May 2 and again by Jul 26; both mature before Oct 3. | Jul 26 |
| Basil | Mar 21 | May 16–May 16 | 140 | two-plantings: Plant May 16 and again by Jul 21; both mature before Oct 3. | Jul 21 |
| Cilantro | — | Mar 28–Apr 18 | 210 | two-plantings: Plant Mar 28 and again by Aug 21; both mature before Oct 24. | Aug 21 |
| Parsley | Feb 14 | May 2–May 9 | 175 | fits: 70 days to maturity, 175 available after May 2. | Aug 1 |
| Celery | Feb 14 | May 2–May 16 | 175 | fits: 120 days to maturity, 175 available after May 2. | Jun 12 |
| Scallions | Feb 14 | Mar 28–Apr 11 | 224 | two-plantings: Plant Mar 28 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Turnip | — | Mar 28–Apr 11 | 224 | two-plantings: Plant Mar 28 and again by Sep 4; both mature before Nov 7. | Sep 4 |
| Kohlrabi | — | Mar 14–Mar 28 | 238 | two-plantings: Plant Mar 14 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Bok Choy | Mar 28 | Apr 18–Apr 25 | 189 | two-plantings: Plant Apr 18 and again by Aug 26; both mature before Oct 24. | Aug 26 |
| Collards | Feb 14 | Mar 28–Apr 11 | 224 | two-plantings: Plant Mar 28 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Cantaloupe | Apr 11 | May 9–May 16 | 133 | fits: 85 days to maturity, 133 available after May 9. | Jun 12 |
| Chives | Jan 31 | May 2–May 9 | 189 | fits: 90 days to maturity, 189 available after May 2. | — |
| Dill | — | Feb 28–May 23 | 238 | two-plantings: Plant Feb 28 and again by Aug 16; both mature before Oct 24. | Aug 16 |
| Oregano | Feb 14 | May 2–May 9 | 189 | fits: 80 days to maturity, 189 available after May 2. | — |
| Rosemary | Jan 31 | May 2–May 9 | 175 | fits: 80 days to maturity, 175 available after May 2. | — |
| Sage | Feb 28 | May 2–May 9 | 189 | fits: 75 days to maturity, 189 available after May 2. | — |
| Thyme | Feb 14 | May 2–May 9 | 189 | fits: 90 days to maturity, 189 available after May 2. | — |
| Calendula | Mar 14 | Apr 11–Apr 25 | 196 | two-plantings: Plant Apr 11 and again by Aug 21; both mature before Oct 24. | Aug 21 |
| Cosmos | Mar 28 | Apr 25–May 9 | 161 | two-plantings: Plant Apr 25 and again by Jul 21; both mature before Oct 3. | Jul 21 |
| Lavender | Jan 31 | Apr 25–May 9 | 196 | fits: 90 days to maturity, 196 available after Apr 25. | — |
| Marigolds | Mar 14 | Apr 25–May 2 | 161 | two-plantings: Plant Apr 25 and again by Jul 31; both mature before Oct 3. | Jul 31 |
| Melons | Apr 11 | May 9–May 16 | 133 | fits: 85 days to maturity, 133 available after May 9. | Jun 12 |
| Mint | — | Apr 25–May 9 | 196 | fits: 90 days to maturity, 196 available after Apr 25. | — |
| Nasturtiums | Mar 28 | Apr 25–May 2 | 161 | two-plantings: Plant Apr 25 and again by Jul 26; both mature before Oct 3. | Jul 26 |
| Pole Beans | — | May 2–May 16 | 154 | fits: 65 days to maturity, 154 available after May 2. | Jul 16 |
| Spaghetti Squash | Apr 11 | May 9–May 16 | 140 | fits: 90 days to maturity, 140 available after May 9. | Jun 14 |
| Sunflowers | — | Apr 25–May 9 | 161 | fits: 70 days to maturity, 161 available after Apr 25. | Jul 11 |
| Tomatillos | Feb 28 | May 2–May 9 | 140 | fits: 75 days to maturity, 140 available after May 2. | Jun 22 |
| Watermelon | Apr 11 | May 2–May 9 | 140 | fits: 80 days to maturity, 140 available after May 2. | Jun 17 |
| Yellow Squash | Apr 11 | May 9–May 16 | 147 | two-plantings: Plant May 9 and again by Jul 26; both mature before Oct 3. | Jul 26 |
| Zinnias | Mar 28 | Apr 25–May 9 | 161 | two-plantings: Plant Apr 25 and again by Jul 21; both mature before Oct 3. | Jul 21 |
Month by month in Plymouth
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 31), Lavender (Jan 31), Onion (Jan 31), Rosemary (Jan 31). |
| February | Start indoors: Celery (Feb 14), Collards (Feb 14), Kale (Feb 14), Oregano (Feb 14), Parsley (Feb 14), Scallions (Feb 14), +8 more. Direct sow from: Arugula (Feb 28), Beets (Feb 28), Dill (Feb 28), Peas (Feb 28), Radish (Feb 28), Spinach (Feb 28). |
| March | Start indoors: Eggplant (Mar 7), Calendula (Mar 14), Cauliflower (Mar 14), Marigolds (Mar 14), Pepper (Mar 14), Basil (Mar 21), +7 more. Direct sow from: Kohlrabi (Mar 14), Cilantro (Mar 28), Turnip (Mar 28). Transplant from: Broccoli (Mar 28), Brussel Sprouts (Mar 28), Cabbage (Mar 28), Collards (Mar 28), Kale (Mar 28), Lettuce (Mar 28), +2 more. Plant: Strawberry (Mar 21). |
| April | Start indoors: Cucumber (Apr 4), Butternut Squash (Apr 11), Cantaloupe (Apr 11), Melons (Apr 11), Pumpkin (Apr 11), Spaghetti Squash (Apr 11), +3 more. Direct sow from: Carrots (Apr 4), Potatoes (Apr 11), Sunflowers (Apr 25). Transplant from: Calendula (Apr 11), Swiss Chard (Apr 11), Bok Choy (Apr 18), Cauliflower (Apr 18), Cosmos (Apr 25), Lavender (Apr 25), +4 more. Last frost around April 25. |
| May | Direct sow from: Beans (May 2), Pole Beans (May 2). Transplant from: Celery (May 2), Chives (May 2), Corn (May 2), Okra (May 2), Oregano (May 2), Parsley (May 2), +17 more. |
| June | Last sowing dates: Butternut Squash (Jun 4), Pumpkin (Jun 4), Cantaloupe (Jun 12), Celery (Jun 12), Melons (Jun 12), Spaghetti Squash (Jun 14), +6 more. |
| July | Last sowing dates: Sunflowers (Jul 11), Brussel Sprouts (Jul 16), Pole Beans (Jul 16), Basil (Jul 21), Cosmos (Jul 21), Cucumber (Jul 21), +9 more. |
| August | Last sowing dates: Parsley (Aug 1), Peas (Aug 6), Cabbage (Aug 15), Carrots (Aug 15), Beets (Aug 16), Dill (Aug 16), +9 more. |
| September | Last sowing dates: Turnip (Sep 4), Arugula (Sep 14), Spinach (Sep 14), Radish (Sep 15). |
| October | Direct sow from: Garlic (Oct 17). First frost around October 17. |
| November | Last sowing dates: Garlic (Nov 7). |
| 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 Plymouth, MA (ZIP 02360)?
The median last spring frost date for Plymouth, MA (ZIP code 02360) is around April 25. 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 15; one in ten it runs past May 7.
What is the first fall frost date in Plymouth, MA?
The median first fall frost date for Plymouth, MA is around October 17. 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 October 2 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Plymouth, MA?
The frost-free growing season in Plymouth is about 175 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 Plymouth (175 frost-free days, a moderate season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Plymouth, MA?
Plymouth, MA is in USDA hardiness zone 7a (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 Plymouth, MA?
Start tomatoes indoors Mar 21 and plant out May 9 in Plymouth. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Plymouth?
Two: plant Mar 28 and again by Aug 26; both mature before Oct 24.
When do I plant garlic in Plymouth?
Oct 17 to Nov 7; it overwinters and is ready the following summer.
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