Harman US

Planting Calendar for ZIP 48807

Based on your local frost dates - last spring frost around Apr 28, first fall frost around Oct 24 - here is when to plant 79 common crops near ZIP 48807.

Last spring frost
Apr 28
First fall frost
Oct 24
Hardiness zone
6a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Mar 17 May 5 (Transplant out) -
Peppers Mar 3 May 12 (Transplant out) -
Cucumbers Apr 7 May 5 (Transplant out) Aug 16
Zucchini Apr 7 May 5 (Transplant out) Aug 21
Summer Squash Apr 7 May 5 (Transplant out) Aug 19
Winter Squash Apr 7 May 5 (Transplant out) -
Pumpkins Apr 7 May 5 (Transplant out) -
Green Beans - Apr 28 (Direct sow) Aug 16
Sweet Corn - May 5 (Direct sow) -
Melons Apr 7 May 12 (Transplant out) -
Watermelon Apr 7 May 12 (Transplant out) -
Okra - May 12 (Direct sow) -
Eggplant Mar 3 May 12 (Transplant out) -
Lettuce Mar 31 Mar 31 (Transplant out) Aug 21
Spinach - Mar 17 (Direct sow) Aug 26
Kale Mar 17 Apr 7 (Transplant out) Aug 16
Peas - Mar 17 (Direct sow) Aug 11
Carrots - Apr 7 (Direct sow) Aug 1
Beets - Mar 31 (Direct sow) Aug 16
Radishes - Mar 31 (Direct sow) Sep 12
Broccoli Mar 17 Apr 14 (Transplant out) Aug 6
Cauliflower Mar 17 Apr 14 (Transplant out) Aug 1
Cabbage Mar 17 Apr 7 (Transplant out) Aug 1
Onions Feb 17 Mar 31 (Transplant out) -
Potatoes - Apr 14 (Direct sow) -
Swiss Chard Mar 31 Apr 14 (Transplant out) Aug 16
Sweet Potatoes - May 19 (Direct sow) -
Brussels Sprouts Mar 17 Apr 14 (Transplant out) Jul 2
Celery Feb 17 May 5 (Transplant out) -
Leeks Feb 17 Apr 14 (Transplant out) Jun 12
Turnips - Apr 14 (Direct sow) Aug 21
Rutabaga - Apr 28 (Direct sow) Jul 7
Parsnips - Apr 14 (Direct sow) Jun 12
Kohlrabi Mar 31 Apr 14 (Transplant out) Aug 16
Collard Greens Mar 17 Apr 14 (Transplant out) Aug 6
Mustard Greens - Apr 14 (Direct sow) Aug 26
Arugula - Apr 14 (Direct sow) Aug 31
Bok Choy Mar 31 Apr 14 (Transplant out) Aug 21
Green Onions - Apr 14 (Direct sow) Aug 11
Tomatillos Mar 17 May 5 (Transplant out) -
Fennel Mar 31 Apr 14 (Transplant out) Jul 22
Popcorn Apr 28 May 12 (Transplant out) -
Black-Eyed Peas Apr 28 May 12 (Transplant out) Jul 22
Lima Beans Apr 28 May 12 (Transplant out) -
Edamame Apr 28 May 12 (Transplant out) -
Peanuts Apr 28 May 12 (Transplant out) -
Globe Artichoke Mar 3 Apr 14 (Transplant out) Jul 12
Horseradish Apr 28 Apr 14 (Transplant out) -
Ground Cherries Mar 17 May 12 (Transplant out) -
Radicchio Mar 24 Apr 14 (Transplant out) Aug 1
Endive Mar 24 Apr 14 (Transplant out) Jul 12
Watercress Apr 7 Apr 14 (Transplant out) Aug 11
Sorrel Mar 17 Apr 7 (Transplant out) Aug 11
Sunchokes Apr 28 Apr 14 (Transplant out) -
Malabar Spinach Mar 17 May 12 (Transplant out) -
Amaranth Greens Apr 7 May 12 (Transplant out) Aug 26
Luffa Gourd Mar 17 May 12 (Transplant out) -
New Zealand Spinach Mar 31 May 12 (Transplant out) -
Fava Beans Apr 28 Mar 31 (Transplant out) Jul 17
Chayote Mar 31 May 12 (Transplant out) -
Corn Salad Apr 28 Mar 31 (Transplant out) Aug 11
Bitter Melon Mar 31 May 12 (Transplant out) -
Cardoon Mar 17 Apr 28 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Mar 17 May 5 (Transplant out) -
Cilantro - Apr 14 (Direct sow) Aug 21
Parsley Mar 3 May 12 (Transplant out) Jul 27
Dill - May 5 (Direct sow) Aug 11
Lemon Balm Mar 17 Apr 28 (Transplant out) -
Borage Apr 28 Apr 28 (Transplant out) Aug 16
Chervil Apr 28 Apr 7 (Transplant out) Aug 16
Lemongrass Mar 3 May 12 (Transplant out) -
Summer Savory Mar 17 Apr 28 (Transplant out) -
Marjoram Mar 17 May 5 (Transplant out) -
Lovage Mar 17 Apr 28 (Transplant out) Jul 12
Anise Hyssop Mar 3 Apr 28 (Transplant out) -
Shiso Mar 17 May 5 (Transplant out) -
Stevia Mar 3 May 12 (Transplant out) -
Chamomile Mar 17 Apr 14 (Transplant out) Aug 6
Tarragon Apr 28 Apr 28 (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 Saint Johns, Mi, 12.3 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 48807 Local weather →