Harman US

Planting Calendar for ZIP 50154

Based on your local frost dates - last spring frost around Apr 24, first fall frost around Oct 12 - here is when to plant 79 common crops near ZIP 50154.

Last spring frost
Apr 24
First fall frost
Oct 12
Hardiness zone
5a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Mar 13 May 1 (Transplant out) -
Peppers Feb 27 May 8 (Transplant out) -
Cucumbers Apr 3 May 1 (Transplant out) Aug 4
Zucchini Apr 3 May 1 (Transplant out) Aug 9
Summer Squash Apr 3 May 1 (Transplant out) Aug 7
Winter Squash Apr 3 May 1 (Transplant out) -
Pumpkins Apr 3 May 1 (Transplant out) -
Green Beans - Apr 24 (Direct sow) Aug 4
Sweet Corn - May 1 (Direct sow) -
Melons Apr 3 May 8 (Transplant out) -
Watermelon Apr 3 May 8 (Transplant out) -
Okra - May 8 (Direct sow) -
Eggplant Feb 27 May 8 (Transplant out) -
Lettuce Mar 27 Mar 27 (Transplant out) Aug 9
Spinach - Mar 13 (Direct sow) Aug 14
Kale Mar 13 Apr 3 (Transplant out) Aug 4
Peas - Mar 13 (Direct sow) Jul 30
Carrots - Apr 3 (Direct sow) Jul 20
Beets - Mar 27 (Direct sow) Aug 4
Radishes - Mar 27 (Direct sow) Aug 31
Broccoli Mar 13 Apr 10 (Transplant out) Jul 25
Cauliflower Mar 13 Apr 10 (Transplant out) Jul 20
Cabbage Mar 13 Apr 3 (Transplant out) Jul 20
Onions Feb 13 Mar 27 (Transplant out) -
Potatoes - Apr 10 (Direct sow) -
Swiss Chard Mar 27 Apr 10 (Transplant out) Aug 4
Sweet Potatoes - May 15 (Direct sow) -
Brussels Sprouts Mar 13 Apr 10 (Transplant out) Jun 20
Celery Feb 13 May 1 (Transplant out) -
Leeks Feb 13 Apr 10 (Transplant out) May 31
Turnips - Apr 10 (Direct sow) Aug 9
Rutabaga - Apr 24 (Direct sow) Jun 25
Parsnips - Apr 10 (Direct sow) May 31
Kohlrabi Mar 27 Apr 10 (Transplant out) Aug 4
Collard Greens Mar 13 Apr 10 (Transplant out) Jul 25
Mustard Greens - Apr 10 (Direct sow) Aug 14
Arugula - Apr 10 (Direct sow) Aug 19
Bok Choy Mar 27 Apr 10 (Transplant out) Aug 9
Green Onions - Apr 10 (Direct sow) Jul 30
Tomatillos Mar 13 May 1 (Transplant out) -
Fennel Mar 27 Apr 10 (Transplant out) Jul 10
Popcorn Apr 24 May 8 (Transplant out) -
Black-Eyed Peas Apr 24 May 8 (Transplant out) Jul 10
Lima Beans Apr 24 May 8 (Transplant out) -
Edamame Apr 24 May 8 (Transplant out) -
Peanuts Apr 24 May 8 (Transplant out) -
Globe Artichoke Feb 27 Apr 10 (Transplant out) Jun 30
Horseradish Apr 24 Apr 10 (Transplant out) -
Ground Cherries Mar 13 May 8 (Transplant out) -
Radicchio Mar 20 Apr 10 (Transplant out) Jul 20
Endive Mar 20 Apr 10 (Transplant out) Jun 30
Watercress Apr 3 Apr 10 (Transplant out) Jul 30
Sorrel Mar 13 Apr 3 (Transplant out) Jul 30
Sunchokes Apr 24 Apr 10 (Transplant out) -
Malabar Spinach Mar 13 May 8 (Transplant out) -
Amaranth Greens Apr 3 May 8 (Transplant out) Aug 14
Luffa Gourd Mar 13 May 8 (Transplant out) -
New Zealand Spinach Mar 27 May 8 (Transplant out) -
Fava Beans Apr 24 Mar 27 (Transplant out) Jul 5
Chayote Mar 27 May 8 (Transplant out) -
Corn Salad Apr 24 Mar 27 (Transplant out) Jul 30
Bitter Melon Mar 27 May 8 (Transplant out) -
Cardoon Mar 13 Apr 24 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Mar 13 May 1 (Transplant out) -
Cilantro - Apr 10 (Direct sow) Aug 9
Parsley Feb 27 May 8 (Transplant out) Jul 15
Dill - May 1 (Direct sow) Jul 30
Lemon Balm Mar 13 Apr 24 (Transplant out) -
Borage Apr 24 Apr 24 (Transplant out) Aug 4
Chervil Apr 24 Apr 3 (Transplant out) Aug 4
Lemongrass Feb 27 May 8 (Transplant out) -
Summer Savory Mar 13 Apr 24 (Transplant out) -
Marjoram Mar 13 May 1 (Transplant out) -
Lovage Mar 13 Apr 24 (Transplant out) Jun 30
Anise Hyssop Feb 27 Apr 24 (Transplant out) -
Shiso Mar 13 May 1 (Transplant out) -
Stevia Feb 27 May 8 (Transplant out) -
Chamomile Mar 13 Apr 10 (Transplant out) Jul 25
Tarragon Apr 24 Apr 24 (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 Colo, Ia, 11.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 50154 Local weather →