Frost Dates for Flushing, MI 48433
Last spring frost May 6 · First fall frost October 11 · 158 frost-free days · USDA Zone 6a
ZIP 48433 has about 26,400 people.
Moderate season: 158 frost-free days. Spring frost risk spans April 22–May 19 (27 days). Fall frost risk spans September 27–October 27 (30 days).
Frost probability for 48433
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 19 | May 6 | April 22 |
| Fall (first frost) | September 27 | October 11 | October 27 |
Dates come from NOAA 1971–2000 freeze probabilities at FLINT FCWOS (15.4 km away); the 50% date is the median year.
Which crops fit a 158-day season in Flushing
In Flushing (158 frost-free days, a moderate season), 32 of 56 planner crops fit outright, 23 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 1 | May 20–May 27 | 116 | fits: 80 days to maturity, 116 available after May 20. | Jun 11 |
| Pepper | Mar 25 | May 20–May 27 | 116 | fits: 75 days to maturity, 116 available after May 20. | Jun 16 |
| Lettuce | Mar 11 | Apr 8–Apr 15 | 193 | two-plantings: Plant Apr 8 and again by Aug 20; both mature before Oct 18. | Aug 20 |
| Carrots | — | Apr 15–Apr 22 | 200 | fits: 70 days to maturity, 200 available after Apr 15. | Aug 9 |
| Cucumber | Apr 15 | May 20–May 27 | 130 | fits: 60 days to maturity, 130 available after May 20. | Jul 15 |
| Beans | — | May 13–May 27 | 144 | two-plantings: Plant May 13 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Peas | — | Mar 11–May 20 | 221 | fits: 65 days to maturity, 221 available after Mar 11. | Jul 31 |
| Zucchini | Apr 22 | May 20–May 27 | 130 | two-plantings: Plant May 20 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Onion | Feb 11 | Apr 8–Apr 22 | 193 | fits: 100 days to maturity, 193 available after Apr 8. | — |
| Spinach | — | Mar 11–Apr 29 | 235 | two-plantings: Plant Mar 11 and again by Sep 8; both mature before Nov 1. | Sep 8 |
| Kale | Feb 25 | Apr 8–Apr 22 | 207 | two-plantings: Plant Apr 8 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Broccoli | Mar 11 | Apr 8–Apr 22 | 193 | fits: 80 days to maturity, 193 available after Apr 8. | Jul 16 |
| Cabbage | Mar 11 | Apr 8–Apr 22 | 207 | fits: 70 days to maturity, 207 available after Apr 8. | Aug 9 |
| Radish | — | Mar 11–Jun 3 | 221 | two-plantings: Plant Mar 11 and again by Sep 9; both mature before Oct 18. | Sep 9 |
| Beets | — | Mar 11–Jun 3 | 221 | two-plantings: Plant Mar 11 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Potatoes | — | Apr 22–Apr 29 | 179 | fits: 90 days to maturity, 179 available after Apr 22. | — |
| Garlic | — | Oct 11 | 263 | overwinter: Plant Oct 11 to Nov 1; harvest the following summer. | Nov 1 |
| Strawberry | — | Apr 1–May 27 | 214 | perennial: A perennial: plant Apr 1; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 8 | May 13–May 20 | 130 | fits: 75 days to maturity, 130 available after May 13. | Jun 23 |
| Pumpkin | Apr 22 | May 20–May 20 | 123 | fits: 100 days to maturity, 123 available after May 20. | May 29 |
| Cauliflower | Mar 25 | Apr 29–May 13 | 172 | fits: 75 days to maturity, 172 available after Apr 29. | Jul 21 |
| Swiss Chard | Mar 11 | Apr 22–Apr 22 | 179 | two-plantings: Plant Apr 22 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Arugula | — | Mar 11–Jun 3 | 235 | two-plantings: Plant Mar 11 and again by Sep 8; both mature before Nov 1. | Sep 8 |
| Brussel Sprouts | Mar 11 | Apr 8–Apr 22 | 207 | fits: 100 days to maturity, 207 available after Apr 8. | Jul 10 |
| Butternut Squash | Apr 22 | May 20–May 27 | 123 | fits: 100 days to maturity, 123 available after May 20. | May 29 |
| Eggplant | Mar 18 | May 20–May 27 | 116 | fits: 70 days to maturity, 116 available after May 20. | Jun 21 |
| Okra | Apr 8 | May 13–May 20 | 137 | two-plantings: Plant May 13 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Basil | Apr 1 | May 27–May 27 | 123 | fits: 60 days to maturity, 123 available after May 27. | Jul 15 |
| Cilantro | — | Apr 8–Apr 29 | 193 | two-plantings: Plant Apr 8 and again by Aug 15; both mature before Oct 18. | Aug 15 |
| Parsley | Feb 25 | May 13–May 20 | 158 | fits: 70 days to maturity, 158 available after May 13. | Jul 26 |
| Celery | Feb 25 | May 13–May 27 | 158 | fits: 120 days to maturity, 158 available after May 13. | Jun 6 |
| Scallions | Feb 25 | Apr 8–Apr 22 | 207 | two-plantings: Plant Apr 8 and again by Aug 19; both mature before Nov 1. | Aug 19 |
| Turnip | — | Apr 8–Apr 22 | 207 | two-plantings: Plant Apr 8 and again by Aug 29; both mature before Nov 1. | Aug 29 |
| Kohlrabi | — | Mar 25–Apr 8 | 221 | two-plantings: Plant Mar 25 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Bok Choy | Apr 8 | Apr 29–May 6 | 172 | two-plantings: Plant Apr 29 and again by Aug 20; both mature before Oct 18. | Aug 20 |
| Collards | Feb 25 | Apr 8–Apr 22 | 207 | two-plantings: Plant Apr 8 and again by Aug 19; both mature before Nov 1. | Aug 19 |
| Cantaloupe | Apr 22 | May 20–May 27 | 116 | fits: 85 days to maturity, 116 available after May 20. | Jun 6 |
| Chives | Feb 11 | May 13–May 20 | 172 | fits: 90 days to maturity, 172 available after May 13. | — |
| Dill | — | Mar 11–Jun 3 | 221 | two-plantings: Plant Mar 11 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Oregano | Feb 25 | May 13–May 20 | 172 | fits: 80 days to maturity, 172 available after May 13. | — |
| Rosemary | Feb 11 | May 13–May 20 | 158 | fits: 80 days to maturity, 158 available after May 13. | — |
| Sage | Mar 11 | May 13–May 20 | 172 | fits: 75 days to maturity, 172 available after May 13. | — |
| Thyme | Feb 25 | May 13–May 20 | 172 | fits: 90 days to maturity, 172 available after May 13. | — |
| Calendula | Mar 25 | Apr 22–May 6 | 179 | two-plantings: Plant Apr 22 and again by Aug 15; both mature before Oct 18. | Aug 15 |
| Cosmos | Apr 8 | May 6–May 20 | 144 | two-plantings: Plant May 6 and again by Jul 15; both mature before Sep 27. | Jul 15 |
| Lavender | Feb 11 | May 6–May 20 | 179 | fits: 90 days to maturity, 179 available after May 6. | — |
| Marigolds | Mar 25 | May 6–May 13 | 144 | two-plantings: Plant May 6 and again by Jul 25; both mature before Sep 27. | Jul 25 |
| Melons | Apr 22 | May 20–May 27 | 116 | fits: 85 days to maturity, 116 available after May 20. | Jun 6 |
| Mint | — | May 6–May 20 | 179 | fits: 90 days to maturity, 179 available after May 6. | — |
| Nasturtiums | Apr 8 | May 6–May 13 | 144 | two-plantings: Plant May 6 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Pole Beans | — | May 13–May 27 | 137 | fits: 65 days to maturity, 137 available after May 13. | Jul 10 |
| Spaghetti Squash | Apr 22 | May 20–May 27 | 123 | fits: 90 days to maturity, 123 available after May 20. | Jun 8 |
| Sunflowers | — | May 6–May 20 | 144 | fits: 70 days to maturity, 144 available after May 6. | Jul 5 |
| Tomatillos | Mar 11 | May 13–May 20 | 123 | fits: 75 days to maturity, 123 available after May 13. | Jun 16 |
| Watermelon | Apr 22 | May 13–May 20 | 123 | fits: 80 days to maturity, 123 available after May 13. | Jun 11 |
| Yellow Squash | Apr 22 | May 20–May 27 | 130 | two-plantings: Plant May 20 and again by Jul 20; both mature before Sep 27. | Jul 20 |
| Zinnias | Apr 8 | May 6–May 20 | 144 | two-plantings: Plant May 6 and again by Jul 15; both mature before Sep 27. | Jul 15 |
Month by month in Flushing
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 11), Lavender (Feb 11), Onion (Feb 11), Rosemary (Feb 11), Celery (Feb 25), Collards (Feb 25), +5 more. |
| March | Start indoors: Broccoli (Mar 11), Brussel Sprouts (Mar 11), Cabbage (Mar 11), Lettuce (Mar 11), Sage (Mar 11), Swiss Chard (Mar 11), +6 more. Direct sow from: Arugula (Mar 11), Beets (Mar 11), Dill (Mar 11), Peas (Mar 11), Radish (Mar 11), Spinach (Mar 11), +1 more. |
| April | Start indoors: Basil (Apr 1), Tomato (Apr 1), Bok Choy (Apr 8), Corn (Apr 8), Cosmos (Apr 8), Nasturtiums (Apr 8), +11 more. Direct sow from: Cilantro (Apr 8), Turnip (Apr 8), Carrots (Apr 15), Potatoes (Apr 22). Transplant from: Broccoli (Apr 8), Brussel Sprouts (Apr 8), Cabbage (Apr 8), Collards (Apr 8), Kale (Apr 8), Lettuce (Apr 8), +6 more. Plant: Strawberry (Apr 1). |
| May | Direct sow from: Sunflowers (May 6), Beans (May 13), Pole Beans (May 13). Transplant from: Cosmos (May 6), Lavender (May 6), Marigolds (May 6), Mint (May 6), Nasturtiums (May 6), Zinnias (May 6), +23 more. Last frost around May 6. Last sowing dates: Butternut Squash (May 29), Pumpkin (May 29). |
| June | Last sowing dates: Cantaloupe (Jun 6), Celery (Jun 6), Melons (Jun 6), Spaghetti Squash (Jun 8), Tomato (Jun 11), Watermelon (Jun 11), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 5), Brussel Sprouts (Jul 10), Pole Beans (Jul 10), Basil (Jul 15), Cosmos (Jul 15), Cucumber (Jul 15), +11 more. |
| August | Last sowing dates: Cabbage (Aug 9), Carrots (Aug 9), Beets (Aug 10), Dill (Aug 10), Swiss Chard (Aug 10), Calendula (Aug 15), +8 more. |
| September | Last sowing dates: Arugula (Sep 8), Spinach (Sep 8), Radish (Sep 9). |
| October | Direct sow from: Garlic (Oct 11). First frost around October 11. |
| November | Last sowing dates: Garlic (Nov 1). |
| 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 Flushing, MI (ZIP 48433)?
The median last spring frost date for Flushing, MI (ZIP code 48433) is around May 6. 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 22; one in ten it runs past May 19.
What is the first fall frost date in Flushing, MI?
The median first fall frost date for Flushing, MI is around October 11. 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 Flushing, MI?
The frost-free growing season in Flushing is about 158 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 Flushing (158 frost-free days, a moderate season), 32 of 56 planner crops fit outright, 23 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Flushing, MI?
Flushing, MI 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 Flushing, MI?
Start tomatoes indoors Apr 1 and plant out May 20 in Flushing. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Flushing?
Two: plant Apr 8 and again by Aug 20; both mature before Oct 18.
When do I plant garlic in Flushing?
Oct 11 to Nov 1; it overwinters and is ready the following summer.
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