Frost Dates for Glencoe, IL 60022
Last spring frost April 27 · First fall frost October 13 · 169 frost-free days · USDA Zone 6a
ZIP 60022 has about 8,350 people.
Moderate season: 169 frost-free days. Spring frost risk spans April 12–May 12 (30 days). Fall frost risk spans September 28–October 28 (30 days).
Frost probability for 60022
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 12 | April 27 | April 12 |
| Fall (first frost) | September 28 | October 13 | October 28 |
Dates come from NOAA 1971–2000 freeze probabilities at WAUKEGAN (25.5 km away); the 50% date is the median year.
Which crops fit a 169-day season in Glencoe
In Glencoe (169 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 23 | May 11–May 18 | 127 | fits: 80 days to maturity, 127 available after May 11. | Jun 13 |
| Pepper | Mar 16 | May 11–May 18 | 127 | fits: 75 days to maturity, 127 available after May 11. | Jun 18 |
| Lettuce | Mar 2 | Mar 30–Apr 6 | 204 | two-plantings: Plant Mar 30 and again by Aug 22; both mature before Oct 20. | Aug 22 |
| Carrots | — | Apr 6–Apr 13 | 211 | fits: 70 days to maturity, 211 available after Apr 6. | Aug 11 |
| Cucumber | Apr 6 | May 11–May 18 | 141 | two-plantings: Plant May 11 and again by Jul 17; both mature before Sep 29. | Jul 17 |
| Beans | — | May 4–May 18 | 155 | two-plantings: Plant May 4 and again by Jul 24; both mature before Oct 6. | Jul 24 |
| Peas | — | Mar 2–May 11 | 232 | fits: 65 days to maturity, 232 available after Mar 2. | Aug 2 |
| Zucchini | Apr 13 | May 11–May 18 | 141 | two-plantings: Plant May 11 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Onion | Feb 2 | Mar 30–Apr 13 | 204 | fits: 100 days to maturity, 204 available after Mar 30. | — |
| Spinach | — | Mar 2–Apr 20 | 246 | two-plantings: Plant Mar 2 and again by Sep 10; both mature before Nov 3. | Sep 10 |
| Kale | Feb 16 | Mar 30–Apr 13 | 218 | two-plantings: Plant Mar 30 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Broccoli | Mar 2 | Mar 30–Apr 13 | 204 | fits: 80 days to maturity, 204 available after Mar 30. | Jul 18 |
| Cabbage | Mar 2 | Mar 30–Apr 13 | 218 | fits: 70 days to maturity, 218 available after Mar 30. | Aug 11 |
| Radish | — | Mar 2–May 25 | 232 | two-plantings: Plant Mar 2 and again by Sep 11; both mature before Oct 20. | Sep 11 |
| Beets | — | Mar 2–May 25 | 232 | two-plantings: Plant Mar 2 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Potatoes | — | Apr 13–Apr 20 | 190 | fits: 90 days to maturity, 190 available after Apr 13. | — |
| Garlic | — | Oct 13 | 274 | overwinter: Plant Oct 13 to Nov 3; harvest the following summer. | Nov 3 |
| Strawberry | — | Mar 23–May 18 | 225 | perennial: A perennial: plant Mar 23; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 30 | May 4–May 11 | 141 | fits: 75 days to maturity, 141 available after May 4. | Jun 25 |
| Pumpkin | Apr 13 | May 11–May 11 | 134 | fits: 100 days to maturity, 134 available after May 11. | May 31 |
| Cauliflower | Mar 16 | Apr 20–May 4 | 183 | fits: 75 days to maturity, 183 available after Apr 20. | Jul 23 |
| Swiss Chard | Mar 2 | Apr 13–Apr 13 | 190 | two-plantings: Plant Apr 13 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Arugula | — | Mar 2–May 25 | 246 | two-plantings: Plant Mar 2 and again by Sep 10; both mature before Nov 3. | Sep 10 |
| Brussel Sprouts | Mar 2 | Mar 30–Apr 13 | 218 | fits: 100 days to maturity, 218 available after Mar 30. | Jul 12 |
| Butternut Squash | Apr 13 | May 11–May 18 | 134 | fits: 100 days to maturity, 134 available after May 11. | May 31 |
| Eggplant | Mar 9 | May 11–May 18 | 127 | fits: 70 days to maturity, 127 available after May 11. | Jun 23 |
| Okra | Mar 30 | May 4–May 11 | 148 | two-plantings: Plant May 4 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Basil | Mar 23 | May 18–May 18 | 134 | two-plantings: Plant May 18 and again by Jul 17; both mature before Sep 29. | Jul 17 |
| Cilantro | — | Mar 30–Apr 20 | 204 | two-plantings: Plant Mar 30 and again by Aug 17; both mature before Oct 20. | Aug 17 |
| Parsley | Feb 16 | May 4–May 11 | 169 | fits: 70 days to maturity, 169 available after May 4. | Jul 28 |
| Celery | Feb 16 | May 4–May 18 | 169 | fits: 120 days to maturity, 169 available after May 4. | Jun 8 |
| Scallions | Feb 16 | Mar 30–Apr 13 | 218 | two-plantings: Plant Mar 30 and again by Aug 21; both mature before Nov 3. | Aug 21 |
| Turnip | — | Mar 30–Apr 13 | 218 | two-plantings: Plant Mar 30 and again by Aug 31; both mature before Nov 3. | Aug 31 |
| Kohlrabi | — | Mar 16–Mar 30 | 232 | two-plantings: Plant Mar 16 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Bok Choy | Mar 30 | Apr 20–Apr 27 | 183 | two-plantings: Plant Apr 20 and again by Aug 22; both mature before Oct 20. | Aug 22 |
| Collards | Feb 16 | Mar 30–Apr 13 | 218 | two-plantings: Plant Mar 30 and again by Aug 21; both mature before Nov 3. | Aug 21 |
| Cantaloupe | Apr 13 | May 11–May 18 | 127 | fits: 85 days to maturity, 127 available after May 11. | Jun 8 |
| Chives | Feb 2 | May 4–May 11 | 183 | fits: 90 days to maturity, 183 available after May 4. | — |
| Dill | — | Mar 2–May 25 | 232 | two-plantings: Plant Mar 2 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Oregano | Feb 16 | May 4–May 11 | 183 | fits: 80 days to maturity, 183 available after May 4. | — |
| Rosemary | Feb 2 | May 4–May 11 | 169 | fits: 80 days to maturity, 169 available after May 4. | — |
| Sage | Mar 2 | May 4–May 11 | 183 | fits: 75 days to maturity, 183 available after May 4. | — |
| Thyme | Feb 16 | May 4–May 11 | 183 | fits: 90 days to maturity, 183 available after May 4. | — |
| Calendula | Mar 16 | Apr 13–Apr 27 | 190 | two-plantings: Plant Apr 13 and again by Aug 17; both mature before Oct 20. | Aug 17 |
| Cosmos | Mar 30 | Apr 27–May 11 | 155 | two-plantings: Plant Apr 27 and again by Jul 17; both mature before Sep 29. | Jul 17 |
| Lavender | Feb 2 | Apr 27–May 11 | 190 | fits: 90 days to maturity, 190 available after Apr 27. | — |
| Marigolds | Mar 16 | Apr 27–May 4 | 155 | two-plantings: Plant Apr 27 and again by Jul 27; both mature before Sep 29. | Jul 27 |
| Melons | Apr 13 | May 11–May 18 | 127 | fits: 85 days to maturity, 127 available after May 11. | Jun 8 |
| Mint | — | Apr 27–May 11 | 190 | fits: 90 days to maturity, 190 available after Apr 27. | — |
| Nasturtiums | Mar 30 | Apr 27–May 4 | 155 | two-plantings: Plant Apr 27 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Pole Beans | — | May 4–May 18 | 148 | fits: 65 days to maturity, 148 available after May 4. | Jul 12 |
| Spaghetti Squash | Apr 13 | May 11–May 18 | 134 | fits: 90 days to maturity, 134 available after May 11. | Jun 10 |
| Sunflowers | — | Apr 27–May 11 | 155 | fits: 70 days to maturity, 155 available after Apr 27. | Jul 7 |
| Tomatillos | Mar 2 | May 4–May 11 | 134 | fits: 75 days to maturity, 134 available after May 4. | Jun 18 |
| Watermelon | Apr 13 | May 4–May 11 | 134 | fits: 80 days to maturity, 134 available after May 4. | Jun 13 |
| Yellow Squash | Apr 13 | May 11–May 18 | 141 | two-plantings: Plant May 11 and again by Jul 22; both mature before Sep 29. | Jul 22 |
| Zinnias | Mar 30 | Apr 27–May 11 | 155 | two-plantings: Plant Apr 27 and again by Jul 17; both mature before Sep 29. | Jul 17 |
Month by month in Glencoe
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 2), Lavender (Feb 2), Onion (Feb 2), Rosemary (Feb 2), Celery (Feb 16), Collards (Feb 16), +5 more. |
| March | Start indoors: Broccoli (Mar 2), Brussel Sprouts (Mar 2), Cabbage (Mar 2), Lettuce (Mar 2), Sage (Mar 2), Swiss Chard (Mar 2), +14 more. Direct sow from: Arugula (Mar 2), Beets (Mar 2), Dill (Mar 2), Peas (Mar 2), Radish (Mar 2), Spinach (Mar 2), +3 more. Transplant from: Broccoli (Mar 30), Brussel Sprouts (Mar 30), Cabbage (Mar 30), Collards (Mar 30), Kale (Mar 30), Lettuce (Mar 30), +2 more. Plant: Strawberry (Mar 23). |
| April | Start indoors: Cucumber (Apr 6), Butternut Squash (Apr 13), Cantaloupe (Apr 13), Melons (Apr 13), Pumpkin (Apr 13), Spaghetti Squash (Apr 13), +3 more. Direct sow from: Carrots (Apr 6), Potatoes (Apr 13), Sunflowers (Apr 27). Transplant from: Calendula (Apr 13), Swiss Chard (Apr 13), Bok Choy (Apr 20), Cauliflower (Apr 20), Cosmos (Apr 27), Lavender (Apr 27), +4 more. Last frost around April 27. |
| May | Direct sow from: Beans (May 4), Pole Beans (May 4). Transplant from: Celery (May 4), Chives (May 4), Corn (May 4), Okra (May 4), Oregano (May 4), Parsley (May 4), +17 more. Last sowing dates: Butternut Squash (May 31), Pumpkin (May 31). |
| June | Last sowing dates: Cantaloupe (Jun 8), Celery (Jun 8), Melons (Jun 8), Spaghetti Squash (Jun 10), Tomato (Jun 13), Watermelon (Jun 13), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 7), Brussel Sprouts (Jul 12), Pole Beans (Jul 12), Basil (Jul 17), Cosmos (Jul 17), Cucumber (Jul 17), +10 more. |
| August | Last sowing dates: Peas (Aug 2), Cabbage (Aug 11), Carrots (Aug 11), Beets (Aug 12), Dill (Aug 12), Swiss Chard (Aug 12), +9 more. |
| September | Last sowing dates: Arugula (Sep 10), Spinach (Sep 10), Radish (Sep 11). |
| October | Direct sow from: Garlic (Oct 13). First frost around October 13. |
| November | Last sowing dates: Garlic (Nov 3). |
| 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 Glencoe, IL (ZIP 60022)?
The median last spring frost date for Glencoe, IL (ZIP code 60022) is around April 27. 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 12; one in ten it runs past May 12.
What is the first fall frost date in Glencoe, IL?
The median first fall frost date for Glencoe, IL is around October 13. 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 28 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Glencoe, IL?
The frost-free growing season in Glencoe is about 169 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 Glencoe (169 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 Glencoe, IL?
Glencoe, IL 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 Glencoe, IL?
Start tomatoes indoors Mar 23 and plant out May 11 in Glencoe. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Glencoe?
Two: plant Mar 30 and again by Aug 22; both mature before Oct 20.
When do I plant garlic in Glencoe?
Oct 13 to Nov 3; it overwinters and is ready the following summer.
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