Harman US

Planting Calendar for ZIP 83841

Based on your local frost dates - last spring frost around May 20, first fall frost around Sep 13 - here is when to plant 79 common crops near ZIP 83841.

Last spring frost
May 20
First fall frost
Sep 13
Hardiness zone
6b

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 8 May 27 (Transplant out) -
Peppers Mar 25 Jun 3 (Transplant out) -
Cucumbers Apr 29 May 27 (Transplant out) Jul 6
Zucchini Apr 29 May 27 (Transplant out) Jul 11
Summer Squash Apr 29 May 27 (Transplant out) Jul 9
Winter Squash Apr 29 May 27 (Transplant out) -
Pumpkins Apr 29 May 27 (Transplant out) -
Green Beans - May 20 (Direct sow) Jul 6
Sweet Corn - May 27 (Direct sow) -
Melons Apr 29 Jun 3 (Transplant out) -
Watermelon Apr 29 Jun 3 (Transplant out) -
Okra - Jun 3 (Direct sow) -
Eggplant Mar 25 Jun 3 (Transplant out) -
Lettuce Apr 22 Apr 22 (Transplant out) Jul 11
Spinach - Apr 8 (Direct sow) Jul 16
Kale Apr 8 Apr 29 (Transplant out) Jul 6
Peas - Apr 8 (Direct sow) Jul 1
Carrots - Apr 29 (Direct sow) Jun 21
Beets - Apr 22 (Direct sow) Jul 6
Radishes - Apr 22 (Direct sow) Aug 2
Broccoli Apr 8 May 6 (Transplant out) Jun 26
Cauliflower Apr 8 May 6 (Transplant out) Jun 21
Cabbage Apr 8 Apr 29 (Transplant out) Jun 21
Onions Mar 11 Apr 22 (Transplant out) -
Potatoes - May 6 (Direct sow) -
Swiss Chard Apr 22 May 6 (Transplant out) Jul 6
Sweet Potatoes - Jun 10 (Direct sow) -
Brussels Sprouts Apr 8 May 6 (Transplant out) May 22
Celery Mar 11 May 27 (Transplant out) -
Leeks Mar 11 May 6 (Transplant out) May 2
Turnips - May 6 (Direct sow) Jul 11
Rutabaga - May 20 (Direct sow) May 27
Parsnips - May 6 (Direct sow) May 2
Kohlrabi Apr 22 May 6 (Transplant out) Jul 6
Collard Greens Apr 8 May 6 (Transplant out) Jun 26
Mustard Greens - May 6 (Direct sow) Jul 16
Arugula - May 6 (Direct sow) Jul 21
Bok Choy Apr 22 May 6 (Transplant out) Jul 11
Green Onions - May 6 (Direct sow) Jul 1
Tomatillos Apr 8 May 27 (Transplant out) -
Fennel Apr 22 May 6 (Transplant out) Jun 11
Popcorn May 20 Jun 3 (Transplant out) -
Black-Eyed Peas May 20 Jun 3 (Transplant out) Jun 11
Lima Beans May 20 Jun 3 (Transplant out) -
Edamame May 20 Jun 3 (Transplant out) -
Peanuts May 20 Jun 3 (Transplant out) -
Globe Artichoke Mar 25 May 6 (Transplant out) Jun 1
Horseradish May 20 May 6 (Transplant out) -
Ground Cherries Apr 8 Jun 3 (Transplant out) -
Radicchio Apr 15 May 6 (Transplant out) Jun 21
Endive Apr 15 May 6 (Transplant out) Jun 1
Watercress Apr 29 May 6 (Transplant out) Jul 1
Sorrel Apr 8 Apr 29 (Transplant out) Jul 1
Sunchokes May 20 May 6 (Transplant out) -
Malabar Spinach Apr 8 Jun 3 (Transplant out) -
Amaranth Greens Apr 29 Jun 3 (Transplant out) Jul 16
Luffa Gourd Apr 8 Jun 3 (Transplant out) -
New Zealand Spinach Apr 22 Jun 3 (Transplant out) -
Fava Beans May 20 Apr 22 (Transplant out) Jun 6
Chayote Apr 22 Jun 3 (Transplant out) -
Corn Salad May 20 Apr 22 (Transplant out) Jul 1
Bitter Melon Apr 22 Jun 3 (Transplant out) -
Cardoon Apr 8 May 20 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 8 May 27 (Transplant out) -
Cilantro - May 6 (Direct sow) Jul 11
Parsley Mar 25 Jun 3 (Transplant out) Jun 16
Dill - May 27 (Direct sow) Jul 1
Lemon Balm Apr 8 May 20 (Transplant out) -
Borage May 20 May 20 (Transplant out) Jul 6
Chervil May 20 Apr 29 (Transplant out) Jul 6
Lemongrass Mar 25 Jun 3 (Transplant out) -
Summer Savory Apr 8 May 20 (Transplant out) -
Marjoram Apr 8 May 27 (Transplant out) -
Lovage Apr 8 May 20 (Transplant out) Jun 1
Anise Hyssop Mar 25 May 20 (Transplant out) -
Shiso Apr 8 May 27 (Transplant out) -
Stevia Mar 25 Jun 3 (Transplant out) -
Chamomile Apr 8 May 6 (Transplant out) Jun 26
Tarragon May 20 May 20 (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 Priest Rvr Exp Stn, Id, 10.9 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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