Harman US

Planting Calendar for ZIP 48651

Based on your local frost dates - last spring frost around May 19, first fall frost around Sep 23 - here is when to plant 79 common crops near ZIP 48651.

Last spring frost
May 19
First fall frost
Sep 23
Hardiness zone
5a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 7 May 26 (Transplant out) -
Peppers Mar 24 Jun 2 (Transplant out) -
Cucumbers Apr 28 May 26 (Transplant out) Jul 16
Zucchini Apr 28 May 26 (Transplant out) Jul 21
Summer Squash Apr 28 May 26 (Transplant out) Jul 19
Winter Squash Apr 28 May 26 (Transplant out) -
Pumpkins Apr 28 May 26 (Transplant out) -
Green Beans - May 19 (Direct sow) Jul 16
Sweet Corn - May 26 (Direct sow) -
Melons Apr 28 Jun 2 (Transplant out) -
Watermelon Apr 28 Jun 2 (Transplant out) -
Okra - Jun 2 (Direct sow) -
Eggplant Mar 24 Jun 2 (Transplant out) -
Lettuce Apr 21 Apr 21 (Transplant out) Jul 21
Spinach - Apr 7 (Direct sow) Jul 26
Kale Apr 7 Apr 28 (Transplant out) Jul 16
Peas - Apr 7 (Direct sow) Jul 11
Carrots - Apr 28 (Direct sow) Jul 1
Beets - Apr 21 (Direct sow) Jul 16
Radishes - Apr 21 (Direct sow) Aug 12
Broccoli Apr 7 May 5 (Transplant out) Jul 6
Cauliflower Apr 7 May 5 (Transplant out) Jul 1
Cabbage Apr 7 Apr 28 (Transplant out) Jul 1
Onions Mar 10 Apr 21 (Transplant out) -
Potatoes - May 5 (Direct sow) -
Swiss Chard Apr 21 May 5 (Transplant out) Jul 16
Sweet Potatoes - Jun 9 (Direct sow) -
Brussels Sprouts Apr 7 May 5 (Transplant out) Jun 1
Celery Mar 10 May 26 (Transplant out) -
Leeks Mar 10 May 5 (Transplant out) May 12
Turnips - May 5 (Direct sow) Jul 21
Rutabaga - May 19 (Direct sow) Jun 6
Parsnips - May 5 (Direct sow) May 12
Kohlrabi Apr 21 May 5 (Transplant out) Jul 16
Collard Greens Apr 7 May 5 (Transplant out) Jul 6
Mustard Greens - May 5 (Direct sow) Jul 26
Arugula - May 5 (Direct sow) Jul 31
Bok Choy Apr 21 May 5 (Transplant out) Jul 21
Green Onions - May 5 (Direct sow) Jul 11
Tomatillos Apr 7 May 26 (Transplant out) -
Fennel Apr 21 May 5 (Transplant out) Jun 21
Popcorn May 19 Jun 2 (Transplant out) -
Black-Eyed Peas May 19 Jun 2 (Transplant out) Jun 21
Lima Beans May 19 Jun 2 (Transplant out) -
Edamame May 19 Jun 2 (Transplant out) -
Peanuts May 19 Jun 2 (Transplant out) -
Globe Artichoke Mar 24 May 5 (Transplant out) Jun 11
Horseradish May 19 May 5 (Transplant out) -
Ground Cherries Apr 7 Jun 2 (Transplant out) -
Radicchio Apr 14 May 5 (Transplant out) Jul 1
Endive Apr 14 May 5 (Transplant out) Jun 11
Watercress Apr 28 May 5 (Transplant out) Jul 11
Sorrel Apr 7 Apr 28 (Transplant out) Jul 11
Sunchokes May 19 May 5 (Transplant out) -
Malabar Spinach Apr 7 Jun 2 (Transplant out) -
Amaranth Greens Apr 28 Jun 2 (Transplant out) Jul 26
Luffa Gourd Apr 7 Jun 2 (Transplant out) -
New Zealand Spinach Apr 21 Jun 2 (Transplant out) -
Fava Beans May 19 Apr 21 (Transplant out) Jun 16
Chayote Apr 21 Jun 2 (Transplant out) -
Corn Salad May 19 Apr 21 (Transplant out) Jul 11
Bitter Melon Apr 21 Jun 2 (Transplant out) -
Cardoon Apr 7 May 19 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 7 May 26 (Transplant out) -
Cilantro - May 5 (Direct sow) Jul 21
Parsley Mar 24 Jun 2 (Transplant out) Jun 26
Dill - May 26 (Direct sow) Jul 11
Lemon Balm Apr 7 May 19 (Transplant out) -
Borage May 19 May 19 (Transplant out) Jul 16
Chervil May 19 Apr 28 (Transplant out) Jul 16
Lemongrass Mar 24 Jun 2 (Transplant out) -
Summer Savory Apr 7 May 19 (Transplant out) -
Marjoram Apr 7 May 26 (Transplant out) -
Lovage Apr 7 May 19 (Transplant out) Jun 11
Anise Hyssop Mar 24 May 19 (Transplant out) -
Shiso Apr 7 May 26 (Transplant out) -
Stevia Mar 24 Jun 2 (Transplant out) -
Chamomile Apr 7 May 5 (Transplant out) Jul 6
Tarragon May 19 May 19 (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 Houghton Lk Roscommon Ap, Mi, 7.8 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 48651 Local weather →