Frost Dates for Greencastle, IN 46135
Last spring frost April 23 · First fall frost October 14 · 174 frost-free days · USDA Zone 6a
ZIP 46135 has about 19,600 people.
Moderate season: 174 frost-free days. Spring frost risk spans April 8–May 8 (30 days). Fall frost risk spans October 1–October 27 (26 days).
Frost probability for 46135
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 8 | April 23 | April 8 |
| Fall (first frost) | October 1 | October 14 | October 27 |
Dates come from NOAA 1971–2000 freeze probabilities at ROCKVILLE (30.8 km away); the 50% date is the median year.
Which crops fit a 174-day season in Greencastle
In Greencastle (174 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 19 | May 7–May 14 | 132 | fits: 80 days to maturity, 132 available after May 7. | Jun 14 |
| Pepper | Mar 12 | May 7–May 14 | 132 | fits: 75 days to maturity, 132 available after May 7. | Jun 19 |
| Lettuce | Feb 26 | Mar 26–Apr 2 | 209 | two-plantings: Plant Mar 26 and again by Aug 23; both mature before Oct 21. | Aug 23 |
| Carrots | — | Apr 2–Apr 9 | 216 | fits: 70 days to maturity, 216 available after Apr 2. | Aug 12 |
| Cucumber | Apr 2 | May 7–May 14 | 146 | two-plantings: Plant May 7 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Beans | — | Apr 30–May 14 | 160 | two-plantings: Plant Apr 30 and again by Jul 25; both mature before Oct 7. | Jul 25 |
| Peas | — | Feb 26–May 7 | 237 | fits: 65 days to maturity, 237 available after Feb 26. | Aug 3 |
| Zucchini | Apr 9 | May 7–May 14 | 146 | two-plantings: Plant May 7 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Onion | Jan 29 | Mar 26–Apr 9 | 209 | fits: 100 days to maturity, 209 available after Mar 26. | — |
| Spinach | — | Feb 26–Apr 16 | 251 | two-plantings: Plant Feb 26 and again by Sep 11; both mature before Nov 4. | Sep 11 |
| Kale | Feb 12 | Mar 26–Apr 9 | 223 | two-plantings: Plant Mar 26 and again by Aug 27; both mature before Nov 4. | Aug 27 |
| Broccoli | Feb 26 | Mar 26–Apr 9 | 209 | fits: 80 days to maturity, 209 available after Mar 26. | Jul 19 |
| Cabbage | Feb 26 | Mar 26–Apr 9 | 223 | fits: 70 days to maturity, 223 available after Mar 26. | Aug 12 |
| Radish | — | Feb 26–May 21 | 237 | two-plantings: Plant Feb 26 and again by Sep 12; both mature before Oct 21. | Sep 12 |
| Beets | — | Feb 26–May 21 | 237 | two-plantings: Plant Feb 26 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Potatoes | — | Apr 9–Apr 16 | 195 | fits: 90 days to maturity, 195 available after Apr 9. | — |
| Garlic | — | Oct 14 | 279 | overwinter: Plant Oct 14 to Nov 4; harvest the following summer. | Nov 4 |
| Strawberry | — | Mar 19–May 14 | 230 | perennial: A perennial: plant Mar 19; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 26 | Apr 30–May 7 | 146 | fits: 75 days to maturity, 146 available after Apr 30. | Jun 26 |
| Pumpkin | Apr 9 | May 7–May 7 | 139 | fits: 100 days to maturity, 139 available after May 7. | Jun 1 |
| Cauliflower | Mar 12 | Apr 16–Apr 30 | 188 | fits: 75 days to maturity, 188 available after Apr 16. | Jul 24 |
| Swiss Chard | Feb 26 | Apr 9–Apr 9 | 195 | two-plantings: Plant Apr 9 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Arugula | — | Feb 26–May 21 | 251 | two-plantings: Plant Feb 26 and again by Sep 11; both mature before Nov 4. | Sep 11 |
| Brussel Sprouts | Feb 26 | Mar 26–Apr 9 | 223 | fits: 100 days to maturity, 223 available after Mar 26. | Jul 13 |
| Butternut Squash | Apr 9 | May 7–May 14 | 139 | fits: 100 days to maturity, 139 available after May 7. | Jun 1 |
| Eggplant | Mar 5 | May 7–May 14 | 132 | fits: 70 days to maturity, 132 available after May 7. | Jun 24 |
| Okra | Mar 26 | Apr 30–May 7 | 153 | two-plantings: Plant Apr 30 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Basil | Mar 19 | May 14–May 14 | 139 | two-plantings: Plant May 14 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Cilantro | — | Mar 26–Apr 16 | 209 | two-plantings: Plant Mar 26 and again by Aug 18; both mature before Oct 21. | Aug 18 |
| Parsley | Feb 12 | Apr 30–May 7 | 174 | fits: 70 days to maturity, 174 available after Apr 30. | Jul 29 |
| Celery | Feb 12 | Apr 30–May 14 | 174 | fits: 120 days to maturity, 174 available after Apr 30. | Jun 9 |
| Scallions | Feb 12 | Mar 26–Apr 9 | 223 | two-plantings: Plant Mar 26 and again by Aug 22; both mature before Nov 4. | Aug 22 |
| Turnip | — | Mar 26–Apr 9 | 223 | two-plantings: Plant Mar 26 and again by Sep 1; both mature before Nov 4. | Sep 1 |
| Kohlrabi | — | Mar 12–Mar 26 | 237 | two-plantings: Plant Mar 12 and again by Aug 27; both mature before Nov 4. | Aug 27 |
| Bok Choy | Mar 26 | Apr 16–Apr 23 | 188 | two-plantings: Plant Apr 16 and again by Aug 23; both mature before Oct 21. | Aug 23 |
| Collards | Feb 12 | Mar 26–Apr 9 | 223 | two-plantings: Plant Mar 26 and again by Aug 22; both mature before Nov 4. | Aug 22 |
| Cantaloupe | Apr 9 | May 7–May 14 | 132 | fits: 85 days to maturity, 132 available after May 7. | Jun 9 |
| Chives | Jan 29 | Apr 30–May 7 | 188 | fits: 90 days to maturity, 188 available after Apr 30. | — |
| Dill | — | Feb 26–May 21 | 237 | two-plantings: Plant Feb 26 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Oregano | Feb 12 | Apr 30–May 7 | 188 | fits: 80 days to maturity, 188 available after Apr 30. | — |
| Rosemary | Jan 29 | Apr 30–May 7 | 174 | fits: 80 days to maturity, 174 available after Apr 30. | — |
| Sage | Feb 26 | Apr 30–May 7 | 188 | fits: 75 days to maturity, 188 available after Apr 30. | — |
| Thyme | Feb 12 | Apr 30–May 7 | 188 | fits: 90 days to maturity, 188 available after Apr 30. | — |
| Calendula | Mar 12 | Apr 9–Apr 23 | 195 | two-plantings: Plant Apr 9 and again by Aug 18; both mature before Oct 21. | Aug 18 |
| Cosmos | Mar 26 | Apr 23–May 7 | 160 | two-plantings: Plant Apr 23 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Lavender | Jan 29 | Apr 23–May 7 | 195 | fits: 90 days to maturity, 195 available after Apr 23. | — |
| Marigolds | Mar 12 | Apr 23–Apr 30 | 160 | two-plantings: Plant Apr 23 and again by Jul 28; both mature before Sep 30. | Jul 28 |
| Melons | Apr 9 | May 7–May 14 | 132 | fits: 85 days to maturity, 132 available after May 7. | Jun 9 |
| Mint | — | Apr 23–May 7 | 195 | fits: 90 days to maturity, 195 available after Apr 23. | — |
| Nasturtiums | Mar 26 | Apr 23–Apr 30 | 160 | two-plantings: Plant Apr 23 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Pole Beans | — | Apr 30–May 14 | 153 | fits: 65 days to maturity, 153 available after Apr 30. | Jul 13 |
| Spaghetti Squash | Apr 9 | May 7–May 14 | 139 | fits: 90 days to maturity, 139 available after May 7. | Jun 11 |
| Sunflowers | — | Apr 23–May 7 | 160 | fits: 70 days to maturity, 160 available after Apr 23. | Jul 8 |
| Tomatillos | Feb 26 | Apr 30–May 7 | 139 | fits: 75 days to maturity, 139 available after Apr 30. | Jun 19 |
| Watermelon | Apr 9 | Apr 30–May 7 | 139 | fits: 80 days to maturity, 139 available after Apr 30. | Jun 14 |
| Yellow Squash | Apr 9 | May 7–May 14 | 146 | two-plantings: Plant May 7 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Zinnias | Mar 26 | Apr 23–May 7 | 160 | two-plantings: Plant Apr 23 and again by Jul 18; both mature before Sep 30. | Jul 18 |
Month by month in Greencastle
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 29), Lavender (Jan 29), Onion (Jan 29), Rosemary (Jan 29). |
| February | Start indoors: Celery (Feb 12), Collards (Feb 12), Kale (Feb 12), Oregano (Feb 12), Parsley (Feb 12), Scallions (Feb 12), +8 more. Direct sow from: Arugula (Feb 26), Beets (Feb 26), Dill (Feb 26), Peas (Feb 26), Radish (Feb 26), Spinach (Feb 26). |
| March | Start indoors: Eggplant (Mar 5), Calendula (Mar 12), Cauliflower (Mar 12), Marigolds (Mar 12), Pepper (Mar 12), Basil (Mar 19), +7 more. Direct sow from: Kohlrabi (Mar 12), Cilantro (Mar 26), Turnip (Mar 26). Transplant from: Broccoli (Mar 26), Brussel Sprouts (Mar 26), Cabbage (Mar 26), Collards (Mar 26), Kale (Mar 26), Lettuce (Mar 26), +2 more. Plant: Strawberry (Mar 19). |
| April | Start indoors: Cucumber (Apr 2), Butternut Squash (Apr 9), Cantaloupe (Apr 9), Melons (Apr 9), Pumpkin (Apr 9), Spaghetti Squash (Apr 9), +3 more. Direct sow from: Carrots (Apr 2), Potatoes (Apr 9), Sunflowers (Apr 23), Beans (Apr 30), Pole Beans (Apr 30). Transplant from: Calendula (Apr 9), Swiss Chard (Apr 9), Bok Choy (Apr 16), Cauliflower (Apr 16), Cosmos (Apr 23), Lavender (Apr 23), +15 more. Last frost around April 23. |
| May | Transplant from: Butternut Squash (May 7), Cantaloupe (May 7), Cucumber (May 7), Eggplant (May 7), Melons (May 7), Pepper (May 7), +6 more. |
| June | Last sowing dates: Butternut Squash (Jun 1), Pumpkin (Jun 1), Cantaloupe (Jun 9), Celery (Jun 9), Melons (Jun 9), Spaghetti Squash (Jun 11), +6 more. |
| July | Last sowing dates: Sunflowers (Jul 8), Brussel Sprouts (Jul 13), Pole Beans (Jul 13), Basil (Jul 18), Cosmos (Jul 18), Cucumber (Jul 18), +10 more. |
| August | Last sowing dates: Peas (Aug 3), Cabbage (Aug 12), Carrots (Aug 12), Beets (Aug 13), Dill (Aug 13), Swiss Chard (Aug 13), +8 more. |
| September | Last sowing dates: Turnip (Sep 1), Arugula (Sep 11), Spinach (Sep 11), Radish (Sep 12). |
| October | Direct sow from: Garlic (Oct 14). First frost around October 14. |
| November | Last sowing dates: Garlic (Nov 4). |
| 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 Greencastle, IN (ZIP 46135)?
The median last spring frost date for Greencastle, IN (ZIP code 46135) is around April 23. 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 8; one in ten it runs past May 8.
What is the first fall frost date in Greencastle, IN?
The median first fall frost date for Greencastle, IN is around October 14. 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 1 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Greencastle, IN?
The frost-free growing season in Greencastle is about 174 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 Greencastle (174 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 Greencastle, IN?
Greencastle, IN 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 Greencastle, IN?
Start tomatoes indoors Mar 19 and plant out May 7 in Greencastle. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Greencastle?
Two: plant Mar 26 and again by Aug 23; both mature before Oct 21.
When do I plant garlic in Greencastle?
Oct 14 to Nov 4; it overwinters and is ready the following summer.
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