Harman US

Planting Calendar for ZIP 48770

Based on your local frost dates - last spring frost around May 23, first fall frost around Sep 26 - here is when to plant 79 common crops near ZIP 48770.

Last spring frost
May 23
First fall frost
Sep 26
Hardiness zone
5a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 11 May 30 (Transplant out) -
Peppers Mar 28 Jun 6 (Transplant out) -
Cucumbers May 2 May 30 (Transplant out) Jul 19
Zucchini May 2 May 30 (Transplant out) Jul 24
Summer Squash May 2 May 30 (Transplant out) Jul 22
Winter Squash May 2 May 30 (Transplant out) -
Pumpkins May 2 May 30 (Transplant out) -
Green Beans - May 23 (Direct sow) Jul 19
Sweet Corn - May 30 (Direct sow) -
Melons May 2 Jun 6 (Transplant out) -
Watermelon May 2 Jun 6 (Transplant out) -
Okra - Jun 6 (Direct sow) -
Eggplant Mar 28 Jun 6 (Transplant out) -
Lettuce Apr 25 Apr 25 (Transplant out) Jul 24
Spinach - Apr 11 (Direct sow) Jul 29
Kale Apr 11 May 2 (Transplant out) Jul 19
Peas - Apr 11 (Direct sow) Jul 14
Carrots - May 2 (Direct sow) Jul 4
Beets - Apr 25 (Direct sow) Jul 19
Radishes - Apr 25 (Direct sow) Aug 15
Broccoli Apr 11 May 9 (Transplant out) Jul 9
Cauliflower Apr 11 May 9 (Transplant out) Jul 4
Cabbage Apr 11 May 2 (Transplant out) Jul 4
Onions Mar 14 Apr 25 (Transplant out) -
Potatoes - May 9 (Direct sow) -
Swiss Chard Apr 25 May 9 (Transplant out) Jul 19
Sweet Potatoes - Jun 13 (Direct sow) -
Brussels Sprouts Apr 11 May 9 (Transplant out) Jun 4
Celery Mar 14 May 30 (Transplant out) -
Leeks Mar 14 May 9 (Transplant out) May 15
Turnips - May 9 (Direct sow) Jul 24
Rutabaga - May 23 (Direct sow) Jun 9
Parsnips - May 9 (Direct sow) May 15
Kohlrabi Apr 25 May 9 (Transplant out) Jul 19
Collard Greens Apr 11 May 9 (Transplant out) Jul 9
Mustard Greens - May 9 (Direct sow) Jul 29
Arugula - May 9 (Direct sow) Aug 3
Bok Choy Apr 25 May 9 (Transplant out) Jul 24
Green Onions - May 9 (Direct sow) Jul 14
Tomatillos Apr 11 May 30 (Transplant out) -
Fennel Apr 25 May 9 (Transplant out) Jun 24
Popcorn May 23 Jun 6 (Transplant out) -
Black-Eyed Peas May 23 Jun 6 (Transplant out) Jun 24
Lima Beans May 23 Jun 6 (Transplant out) -
Edamame May 23 Jun 6 (Transplant out) -
Peanuts May 23 Jun 6 (Transplant out) -
Globe Artichoke Mar 28 May 9 (Transplant out) Jun 14
Horseradish May 23 May 9 (Transplant out) -
Ground Cherries Apr 11 Jun 6 (Transplant out) -
Radicchio Apr 18 May 9 (Transplant out) Jul 4
Endive Apr 18 May 9 (Transplant out) Jun 14
Watercress May 2 May 9 (Transplant out) Jul 14
Sorrel Apr 11 May 2 (Transplant out) Jul 14
Sunchokes May 23 May 9 (Transplant out) -
Malabar Spinach Apr 11 Jun 6 (Transplant out) -
Amaranth Greens May 2 Jun 6 (Transplant out) Jul 29
Luffa Gourd Apr 11 Jun 6 (Transplant out) -
New Zealand Spinach Apr 25 Jun 6 (Transplant out) -
Fava Beans May 23 Apr 25 (Transplant out) Jun 19
Chayote Apr 25 Jun 6 (Transplant out) -
Corn Salad May 23 Apr 25 (Transplant out) Jul 14
Bitter Melon Apr 25 Jun 6 (Transplant out) -
Cardoon Apr 11 May 23 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 11 May 30 (Transplant out) -
Cilantro - May 9 (Direct sow) Jul 24
Parsley Mar 28 Jun 6 (Transplant out) Jun 29
Dill - May 30 (Direct sow) Jul 14
Lemon Balm Apr 11 May 23 (Transplant out) -
Borage May 23 May 23 (Transplant out) Jul 19
Chervil May 23 May 2 (Transplant out) Jul 19
Lemongrass Mar 28 Jun 6 (Transplant out) -
Summer Savory Apr 11 May 23 (Transplant out) -
Marjoram Apr 11 May 30 (Transplant out) -
Lovage Apr 11 May 23 (Transplant out) Jun 14
Anise Hyssop Mar 28 May 23 (Transplant out) -
Shiso Apr 11 May 30 (Transplant out) -
Stevia Mar 28 Jun 6 (Transplant out) -
Chamomile Apr 11 May 9 (Transplant out) Jul 9
Tarragon May 23 May 23 (Transplant out) -
How to read this calendar

Start seeds indoors is when to sow in trays inside so seedlings are ready to transplant. Plant outside is when to transplant seedlings or direct-sow seed, based on frost tolerance. Fall planting by is the latest date to start a fall crop and still harvest before the first fall frost. Tender crops wait until after the last spring frost; hardy crops can go out earlier.

Computed from NOAA 1991–2020 Climate Normals at Hale 5Ssw #2, Mi, 4.4 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 48770 Local weather →