Harman US

Planting Calendar for ZIP 83255

Based on your local frost dates - last spring frost around May 22, first fall frost around Sep 22 - here is when to plant 79 common crops near ZIP 83255.

Last spring frost
May 22
First fall frost
Sep 22
Hardiness zone
5a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 10 May 29 (Transplant out) -
Peppers Mar 27 Jun 5 (Transplant out) -
Cucumbers May 1 May 29 (Transplant out) Jul 15
Zucchini May 1 May 29 (Transplant out) Jul 20
Summer Squash May 1 May 29 (Transplant out) Jul 18
Winter Squash May 1 May 29 (Transplant out) -
Pumpkins May 1 May 29 (Transplant out) -
Green Beans - May 22 (Direct sow) Jul 15
Sweet Corn - May 29 (Direct sow) -
Melons May 1 Jun 5 (Transplant out) -
Watermelon May 1 Jun 5 (Transplant out) -
Okra - Jun 5 (Direct sow) -
Eggplant Mar 27 Jun 5 (Transplant out) -
Lettuce Apr 24 Apr 24 (Transplant out) Jul 20
Spinach - Apr 10 (Direct sow) Jul 25
Kale Apr 10 May 1 (Transplant out) Jul 15
Peas - Apr 10 (Direct sow) Jul 10
Carrots - May 1 (Direct sow) Jun 30
Beets - Apr 24 (Direct sow) Jul 15
Radishes - Apr 24 (Direct sow) Aug 11
Broccoli Apr 10 May 8 (Transplant out) Jul 5
Cauliflower Apr 10 May 8 (Transplant out) Jun 30
Cabbage Apr 10 May 1 (Transplant out) Jun 30
Onions Mar 13 Apr 24 (Transplant out) -
Potatoes - May 8 (Direct sow) -
Swiss Chard Apr 24 May 8 (Transplant out) Jul 15
Sweet Potatoes - Jun 12 (Direct sow) -
Brussels Sprouts Apr 10 May 8 (Transplant out) May 31
Celery Mar 13 May 29 (Transplant out) -
Leeks Mar 13 May 8 (Transplant out) May 11
Turnips - May 8 (Direct sow) Jul 20
Rutabaga - May 22 (Direct sow) Jun 5
Parsnips - May 8 (Direct sow) May 11
Kohlrabi Apr 24 May 8 (Transplant out) Jul 15
Collard Greens Apr 10 May 8 (Transplant out) Jul 5
Mustard Greens - May 8 (Direct sow) Jul 25
Arugula - May 8 (Direct sow) Jul 30
Bok Choy Apr 24 May 8 (Transplant out) Jul 20
Green Onions - May 8 (Direct sow) Jul 10
Tomatillos Apr 10 May 29 (Transplant out) -
Fennel Apr 24 May 8 (Transplant out) Jun 20
Popcorn May 22 Jun 5 (Transplant out) -
Black-Eyed Peas May 22 Jun 5 (Transplant out) Jun 20
Lima Beans May 22 Jun 5 (Transplant out) -
Edamame May 22 Jun 5 (Transplant out) -
Peanuts May 22 Jun 5 (Transplant out) -
Globe Artichoke Mar 27 May 8 (Transplant out) Jun 10
Horseradish May 22 May 8 (Transplant out) -
Ground Cherries Apr 10 Jun 5 (Transplant out) -
Radicchio Apr 17 May 8 (Transplant out) Jun 30
Endive Apr 17 May 8 (Transplant out) Jun 10
Watercress May 1 May 8 (Transplant out) Jul 10
Sorrel Apr 10 May 1 (Transplant out) Jul 10
Sunchokes May 22 May 8 (Transplant out) -
Malabar Spinach Apr 10 Jun 5 (Transplant out) -
Amaranth Greens May 1 Jun 5 (Transplant out) Jul 25
Luffa Gourd Apr 10 Jun 5 (Transplant out) -
New Zealand Spinach Apr 24 Jun 5 (Transplant out) -
Fava Beans May 22 Apr 24 (Transplant out) Jun 15
Chayote Apr 24 Jun 5 (Transplant out) -
Corn Salad May 22 Apr 24 (Transplant out) Jul 10
Bitter Melon Apr 24 Jun 5 (Transplant out) -
Cardoon Apr 10 May 22 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 10 May 29 (Transplant out) -
Cilantro - May 8 (Direct sow) Jul 20
Parsley Mar 27 Jun 5 (Transplant out) Jun 25
Dill - May 29 (Direct sow) Jul 10
Lemon Balm Apr 10 May 22 (Transplant out) -
Borage May 22 May 22 (Transplant out) Jul 15
Chervil May 22 May 1 (Transplant out) Jul 15
Lemongrass Mar 27 Jun 5 (Transplant out) -
Summer Savory Apr 10 May 22 (Transplant out) -
Marjoram Apr 10 May 29 (Transplant out) -
Lovage Apr 10 May 22 (Transplant out) Jun 10
Anise Hyssop Mar 27 May 22 (Transplant out) -
Shiso Apr 10 May 29 (Transplant out) -
Stevia Mar 27 Jun 5 (Transplant out) -
Chamomile Apr 10 May 8 (Transplant out) Jul 5
Tarragon May 22 May 22 (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 Arco, Id, 9.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 83255 Local weather →