Frost Dates for Robinson, IL 62454
Last spring frost April 15 · First fall frost October 14 · 182 frost-free days · USDA Zone 6b
ZIP 62454 has about 10,500 people.
Long season: 182 frost-free days. Spring frost risk spans April 1–April 30 (29 days). Fall frost risk spans September 27–October 31 (34 days).
Frost probability for 62454
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 30 | April 15 | April 1 |
| Fall (first frost) | September 27 | October 14 | October 31 |
Dates come from NOAA 1971–2000 freeze probabilities at NEWTON 6 SSE (32.5 km away); the 50% date is the median year.
Which crops fit a 182-day season in Robinson
In Robinson (182 frost-free days, a long 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 11 | Apr 29–May 6 | 140 | fits: 80 days to maturity, 140 available after Apr 29. | Jun 14 |
| Pepper | Mar 4 | Apr 29–May 6 | 140 | fits: 75 days to maturity, 140 available after Apr 29. | Jun 19 |
| Lettuce | Feb 18 | Mar 18–Mar 25 | 217 | two-plantings: Plant Mar 18 and again by Aug 23; both mature before Oct 21. | Aug 23 |
| Carrots | — | Mar 25–Apr 1 | 224 | fits: 70 days to maturity, 224 available after Mar 25. | Aug 12 |
| Cucumber | Mar 25 | Apr 29–May 6 | 154 | two-plantings: Plant Apr 29 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Beans | — | Apr 22–May 6 | 168 | two-plantings: Plant Apr 22 and again by Jul 25; both mature before Oct 7. | Jul 25 |
| Peas | — | Feb 18–Apr 29 | 245 | fits: 65 days to maturity, 245 available after Feb 18. | Aug 3 |
| Zucchini | Apr 1 | Apr 29–May 6 | 154 | two-plantings: Plant Apr 29 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Onion | Jan 21 | Mar 18–Apr 1 | 217 | fits: 100 days to maturity, 217 available after Mar 18. | — |
| Spinach | — | Feb 18–Apr 8 | 259 | two-plantings: Plant Feb 18 and again by Sep 11; both mature before Nov 4. | Sep 11 |
| Kale | Feb 4 | Mar 18–Apr 1 | 231 | two-plantings: Plant Mar 18 and again by Aug 27; both mature before Nov 4. | Aug 27 |
| Broccoli | Feb 18 | Mar 18–Apr 1 | 217 | fits: 80 days to maturity, 217 available after Mar 18. | Jul 19 |
| Cabbage | Feb 18 | Mar 18–Apr 1 | 231 | fits: 70 days to maturity, 231 available after Mar 18. | Aug 12 |
| Radish | — | Feb 18–May 13 | 245 | two-plantings: Plant Feb 18 and again by Sep 12; both mature before Oct 21. | Sep 12 |
| Beets | — | Feb 18–May 13 | 245 | two-plantings: Plant Feb 18 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Potatoes | — | Apr 1–Apr 8 | 203 | fits: 90 days to maturity, 203 available after Apr 1. | — |
| Garlic | — | Oct 14 | 287 | overwinter: Plant Oct 14 to Nov 4; harvest the following summer. | Nov 4 |
| Strawberry | — | Mar 11–May 6 | 238 | perennial: A perennial: plant Mar 11; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 18 | Apr 22–Apr 29 | 154 | fits: 75 days to maturity, 154 available after Apr 22. | Jun 26 |
| Pumpkin | Apr 1 | Apr 29–Apr 29 | 147 | fits: 100 days to maturity, 147 available after Apr 29. | Jun 1 |
| Cauliflower | Mar 4 | Apr 8–Apr 22 | 196 | fits: 75 days to maturity, 196 available after Apr 8. | Jul 24 |
| Swiss Chard | Feb 18 | Apr 1–Apr 1 | 203 | two-plantings: Plant Apr 1 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Arugula | — | Feb 18–May 13 | 259 | two-plantings: Plant Feb 18 and again by Sep 11; both mature before Nov 4. | Sep 11 |
| Brussel Sprouts | Feb 18 | Mar 18–Apr 1 | 231 | fits: 100 days to maturity, 231 available after Mar 18. | Jul 13 |
| Butternut Squash | Apr 1 | Apr 29–May 6 | 147 | fits: 100 days to maturity, 147 available after Apr 29. | Jun 1 |
| Eggplant | Feb 25 | Apr 29–May 6 | 140 | fits: 70 days to maturity, 140 available after Apr 29. | Jun 24 |
| Okra | Mar 18 | Apr 22–Apr 29 | 161 | two-plantings: Plant Apr 22 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Basil | Mar 11 | May 6–May 6 | 147 | two-plantings: Plant May 6 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Cilantro | — | Mar 18–Apr 8 | 217 | two-plantings: Plant Mar 18 and again by Aug 18; both mature before Oct 21. | Aug 18 |
| Parsley | Feb 4 | Apr 22–Apr 29 | 182 | fits: 70 days to maturity, 182 available after Apr 22. | Jul 29 |
| Celery | Feb 4 | Apr 22–May 6 | 182 | fits: 120 days to maturity, 182 available after Apr 22. | Jun 9 |
| Scallions | Feb 4 | Mar 18–Apr 1 | 231 | two-plantings: Plant Mar 18 and again by Aug 22; both mature before Nov 4. | Aug 22 |
| Turnip | — | Mar 18–Apr 1 | 231 | two-plantings: Plant Mar 18 and again by Sep 1; both mature before Nov 4. | Sep 1 |
| Kohlrabi | — | Mar 4–Mar 18 | 245 | two-plantings: Plant Mar 4 and again by Aug 27; both mature before Nov 4. | Aug 27 |
| Bok Choy | Mar 18 | Apr 8–Apr 15 | 196 | two-plantings: Plant Apr 8 and again by Aug 23; both mature before Oct 21. | Aug 23 |
| Collards | Feb 4 | Mar 18–Apr 1 | 231 | two-plantings: Plant Mar 18 and again by Aug 22; both mature before Nov 4. | Aug 22 |
| Cantaloupe | Apr 1 | Apr 29–May 6 | 140 | fits: 85 days to maturity, 140 available after Apr 29. | Jun 9 |
| Chives | Jan 21 | Apr 22–Apr 29 | 196 | fits: 90 days to maturity, 196 available after Apr 22. | — |
| Dill | — | Feb 18–May 13 | 245 | two-plantings: Plant Feb 18 and again by Aug 13; both mature before Oct 21. | Aug 13 |
| Oregano | Feb 4 | Apr 22–Apr 29 | 196 | fits: 80 days to maturity, 196 available after Apr 22. | — |
| Rosemary | Jan 21 | Apr 22–Apr 29 | 182 | fits: 80 days to maturity, 182 available after Apr 22. | — |
| Sage | Feb 18 | Apr 22–Apr 29 | 196 | fits: 75 days to maturity, 196 available after Apr 22. | — |
| Thyme | Feb 4 | Apr 22–Apr 29 | 196 | fits: 90 days to maturity, 196 available after Apr 22. | — |
| Calendula | Mar 4 | Apr 1–Apr 15 | 203 | two-plantings: Plant Apr 1 and again by Aug 18; both mature before Oct 21. | Aug 18 |
| Cosmos | Mar 18 | Apr 15–Apr 29 | 168 | two-plantings: Plant Apr 15 and again by Jul 18; both mature before Sep 30. | Jul 18 |
| Lavender | Jan 21 | Apr 15–Apr 29 | 203 | fits: 90 days to maturity, 203 available after Apr 15. | — |
| Marigolds | Mar 4 | Apr 15–Apr 22 | 168 | two-plantings: Plant Apr 15 and again by Jul 28; both mature before Sep 30. | Jul 28 |
| Melons | Apr 1 | Apr 29–May 6 | 140 | fits: 85 days to maturity, 140 available after Apr 29. | Jun 9 |
| Mint | — | Apr 15–Apr 29 | 203 | fits: 90 days to maturity, 203 available after Apr 15. | — |
| Nasturtiums | Mar 18 | Apr 15–Apr 22 | 168 | two-plantings: Plant Apr 15 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Pole Beans | — | Apr 22–May 6 | 161 | fits: 65 days to maturity, 161 available after Apr 22. | Jul 13 |
| Spaghetti Squash | Apr 1 | Apr 29–May 6 | 147 | fits: 90 days to maturity, 147 available after Apr 29. | Jun 11 |
| Sunflowers | — | Apr 15–Apr 29 | 168 | fits: 70 days to maturity, 168 available after Apr 15. | Jul 8 |
| Tomatillos | Feb 18 | Apr 22–Apr 29 | 147 | fits: 75 days to maturity, 147 available after Apr 22. | Jun 19 |
| Watermelon | Apr 1 | Apr 22–Apr 29 | 147 | fits: 80 days to maturity, 147 available after Apr 22. | Jun 14 |
| Yellow Squash | Apr 1 | Apr 29–May 6 | 154 | two-plantings: Plant Apr 29 and again by Jul 23; both mature before Sep 30. | Jul 23 |
| Zinnias | Mar 18 | Apr 15–Apr 29 | 168 | two-plantings: Plant Apr 15 and again by Jul 18; both mature before Sep 30. | Jul 18 |
Month by month in Robinson
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 21), Lavender (Jan 21), Onion (Jan 21), Rosemary (Jan 21). |
| February | Start indoors: Celery (Feb 4), Collards (Feb 4), Kale (Feb 4), Oregano (Feb 4), Parsley (Feb 4), Scallions (Feb 4), +9 more. Direct sow from: Arugula (Feb 18), Beets (Feb 18), Dill (Feb 18), Peas (Feb 18), Radish (Feb 18), Spinach (Feb 18). |
| March | Start indoors: Calendula (Mar 4), Cauliflower (Mar 4), Marigolds (Mar 4), Pepper (Mar 4), Basil (Mar 11), Tomato (Mar 11), +7 more. Direct sow from: Kohlrabi (Mar 4), Cilantro (Mar 18), Turnip (Mar 18), Carrots (Mar 25). Transplant from: Broccoli (Mar 18), Brussel Sprouts (Mar 18), Cabbage (Mar 18), Collards (Mar 18), Kale (Mar 18), Lettuce (Mar 18), +2 more. Plant: Strawberry (Mar 11). |
| April | Start indoors: Butternut Squash (Apr 1), Cantaloupe (Apr 1), Melons (Apr 1), Pumpkin (Apr 1), Spaghetti Squash (Apr 1), Watermelon (Apr 1), +2 more. Direct sow from: Potatoes (Apr 1), Sunflowers (Apr 15), Beans (Apr 22), Pole Beans (Apr 22). Transplant from: Calendula (Apr 1), Swiss Chard (Apr 1), Bok Choy (Apr 8), Cauliflower (Apr 8), Cosmos (Apr 15), Lavender (Apr 15), +26 more. Last frost around April 15. |
| May | Transplant from: Basil (May 6). |
| 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 Robinson, IL (ZIP 62454)?
The median last spring frost date for Robinson, IL (ZIP code 62454) is around April 15. 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 1; one in ten it runs past April 30.
What is the first fall frost date in Robinson, IL?
The median first fall frost date for Robinson, IL 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 September 27 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Robinson, IL?
The frost-free growing season in Robinson is about 182 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 Robinson (182 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Robinson, IL?
Robinson, IL is in USDA hardiness zone 6b (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 Robinson, IL?
Start tomatoes indoors Mar 11 and plant out Apr 29 in Robinson. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Robinson?
Two: plant Mar 18 and again by Aug 23; both mature before Oct 21.
When do I plant garlic in Robinson?
Oct 14 to Nov 4; it overwinters and is ready the following summer.
Can I get two tomato crops in Robinson?
Yes: plant out Apr 29 for a summer crop, and set out a second round of transplants by Jun 14 for a fall crop.
Which nearby ZIP has a longer season?
Vincennes (ZIP 47591) has 194 frost-free days, 12 more than Robinson (ZIP 62454). See Vincennes ZIP 47591 frost dates
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