Harman US

Planting Calendar for ZIP 83641

Based on your local frost dates - last spring frost around May 21, first fall frost around Sep 28 - here is when to plant 79 common crops near ZIP 83641.

Last spring frost
May 21
First fall frost
Sep 28
Hardiness zone
7a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 9 May 28 (Transplant out) -
Peppers Mar 26 Jun 4 (Transplant out) -
Cucumbers Apr 30 May 28 (Transplant out) Jul 21
Zucchini Apr 30 May 28 (Transplant out) Jul 26
Summer Squash Apr 30 May 28 (Transplant out) Jul 24
Winter Squash Apr 30 May 28 (Transplant out) -
Pumpkins Apr 30 May 28 (Transplant out) -
Green Beans - May 21 (Direct sow) Jul 21
Sweet Corn - May 28 (Direct sow) -
Melons Apr 30 Jun 4 (Transplant out) -
Watermelon Apr 30 Jun 4 (Transplant out) -
Okra - Jun 4 (Direct sow) -
Eggplant Mar 26 Jun 4 (Transplant out) -
Lettuce Apr 23 Apr 23 (Transplant out) Jul 26
Spinach - Apr 9 (Direct sow) Jul 31
Kale Apr 9 Apr 30 (Transplant out) Jul 21
Peas - Apr 9 (Direct sow) Jul 16
Carrots - Apr 30 (Direct sow) Jul 6
Beets - Apr 23 (Direct sow) Jul 21
Radishes - Apr 23 (Direct sow) Aug 17
Broccoli Apr 9 May 7 (Transplant out) Jul 11
Cauliflower Apr 9 May 7 (Transplant out) Jul 6
Cabbage Apr 9 Apr 30 (Transplant out) Jul 6
Onions Mar 12 Apr 23 (Transplant out) -
Potatoes - May 7 (Direct sow) -
Swiss Chard Apr 23 May 7 (Transplant out) Jul 21
Sweet Potatoes - Jun 11 (Direct sow) -
Brussels Sprouts Apr 9 May 7 (Transplant out) Jun 6
Celery Mar 12 May 28 (Transplant out) -
Leeks Mar 12 May 7 (Transplant out) May 17
Turnips - May 7 (Direct sow) Jul 26
Rutabaga - May 21 (Direct sow) Jun 11
Parsnips - May 7 (Direct sow) May 17
Kohlrabi Apr 23 May 7 (Transplant out) Jul 21
Collard Greens Apr 9 May 7 (Transplant out) Jul 11
Mustard Greens - May 7 (Direct sow) Jul 31
Arugula - May 7 (Direct sow) Aug 5
Bok Choy Apr 23 May 7 (Transplant out) Jul 26
Green Onions - May 7 (Direct sow) Jul 16
Tomatillos Apr 9 May 28 (Transplant out) -
Fennel Apr 23 May 7 (Transplant out) Jun 26
Popcorn May 21 Jun 4 (Transplant out) -
Black-Eyed Peas May 21 Jun 4 (Transplant out) Jun 26
Lima Beans May 21 Jun 4 (Transplant out) -
Edamame May 21 Jun 4 (Transplant out) -
Peanuts May 21 Jun 4 (Transplant out) -
Globe Artichoke Mar 26 May 7 (Transplant out) Jun 16
Horseradish May 21 May 7 (Transplant out) -
Ground Cherries Apr 9 Jun 4 (Transplant out) -
Radicchio Apr 16 May 7 (Transplant out) Jul 6
Endive Apr 16 May 7 (Transplant out) Jun 16
Watercress Apr 30 May 7 (Transplant out) Jul 16
Sorrel Apr 9 Apr 30 (Transplant out) Jul 16
Sunchokes May 21 May 7 (Transplant out) -
Malabar Spinach Apr 9 Jun 4 (Transplant out) -
Amaranth Greens Apr 30 Jun 4 (Transplant out) Jul 31
Luffa Gourd Apr 9 Jun 4 (Transplant out) -
New Zealand Spinach Apr 23 Jun 4 (Transplant out) -
Fava Beans May 21 Apr 23 (Transplant out) Jun 21
Chayote Apr 23 Jun 4 (Transplant out) -
Corn Salad May 21 Apr 23 (Transplant out) Jul 16
Bitter Melon Apr 23 Jun 4 (Transplant out) -
Cardoon Apr 9 May 21 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 9 May 28 (Transplant out) -
Cilantro - May 7 (Direct sow) Jul 26
Parsley Mar 26 Jun 4 (Transplant out) Jul 1
Dill - May 28 (Direct sow) Jul 16
Lemon Balm Apr 9 May 21 (Transplant out) -
Borage May 21 May 21 (Transplant out) Jul 21
Chervil May 21 Apr 30 (Transplant out) Jul 21
Lemongrass Mar 26 Jun 4 (Transplant out) -
Summer Savory Apr 9 May 21 (Transplant out) -
Marjoram Apr 9 May 28 (Transplant out) -
Lovage Apr 9 May 21 (Transplant out) Jun 16
Anise Hyssop Mar 26 May 21 (Transplant out) -
Shiso Apr 9 May 28 (Transplant out) -
Stevia Mar 26 Jun 4 (Transplant out) -
Chamomile Apr 9 May 7 (Transplant out) Jul 11
Tarragon May 21 May 21 (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 Reynolds, Id, 11.5 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 83641 Local weather →