Harman US

Planting Calendar for ZIP 83523

Based on your local frost dates - last spring frost around May 23, first fall frost around Sep 25 - here is when to plant 79 common crops near ZIP 83523.

Last spring frost
May 23
First fall frost
Sep 25
Hardiness zone
6b

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Apr 11 May 30 (Transplant out) -
Peppers Mar 28 Jun 6 (Transplant out) -
Cucumbers May 2 May 30 (Transplant out) Jul 18
Zucchini May 2 May 30 (Transplant out) Jul 23
Summer Squash May 2 May 30 (Transplant out) Jul 21
Winter Squash May 2 May 30 (Transplant out) -
Pumpkins May 2 May 30 (Transplant out) -
Green Beans - May 23 (Direct sow) Jul 18
Sweet Corn - May 30 (Direct sow) -
Melons May 2 Jun 6 (Transplant out) -
Watermelon May 2 Jun 6 (Transplant out) -
Okra - Jun 6 (Direct sow) -
Eggplant Mar 28 Jun 6 (Transplant out) -
Lettuce Apr 25 Apr 25 (Transplant out) Jul 23
Spinach - Apr 11 (Direct sow) Jul 28
Kale Apr 11 May 2 (Transplant out) Jul 18
Peas - Apr 11 (Direct sow) Jul 13
Carrots - May 2 (Direct sow) Jul 3
Beets - Apr 25 (Direct sow) Jul 18
Radishes - Apr 25 (Direct sow) Aug 14
Broccoli Apr 11 May 9 (Transplant out) Jul 8
Cauliflower Apr 11 May 9 (Transplant out) Jul 3
Cabbage Apr 11 May 2 (Transplant out) Jul 3
Onions Mar 14 Apr 25 (Transplant out) -
Potatoes - May 9 (Direct sow) -
Swiss Chard Apr 25 May 9 (Transplant out) Jul 18
Sweet Potatoes - Jun 13 (Direct sow) -
Brussels Sprouts Apr 11 May 9 (Transplant out) Jun 3
Celery Mar 14 May 30 (Transplant out) -
Leeks Mar 14 May 9 (Transplant out) May 14
Turnips - May 9 (Direct sow) Jul 23
Rutabaga - May 23 (Direct sow) Jun 8
Parsnips - May 9 (Direct sow) May 14
Kohlrabi Apr 25 May 9 (Transplant out) Jul 18
Collard Greens Apr 11 May 9 (Transplant out) Jul 8
Mustard Greens - May 9 (Direct sow) Jul 28
Arugula - May 9 (Direct sow) Aug 2
Bok Choy Apr 25 May 9 (Transplant out) Jul 23
Green Onions - May 9 (Direct sow) Jul 13
Tomatillos Apr 11 May 30 (Transplant out) -
Fennel Apr 25 May 9 (Transplant out) Jun 23
Popcorn May 23 Jun 6 (Transplant out) -
Black-Eyed Peas May 23 Jun 6 (Transplant out) Jun 23
Lima Beans May 23 Jun 6 (Transplant out) -
Edamame May 23 Jun 6 (Transplant out) -
Peanuts May 23 Jun 6 (Transplant out) -
Globe Artichoke Mar 28 May 9 (Transplant out) Jun 13
Horseradish May 23 May 9 (Transplant out) -
Ground Cherries Apr 11 Jun 6 (Transplant out) -
Radicchio Apr 18 May 9 (Transplant out) Jul 3
Endive Apr 18 May 9 (Transplant out) Jun 13
Watercress May 2 May 9 (Transplant out) Jul 13
Sorrel Apr 11 May 2 (Transplant out) Jul 13
Sunchokes May 23 May 9 (Transplant out) -
Malabar Spinach Apr 11 Jun 6 (Transplant out) -
Amaranth Greens May 2 Jun 6 (Transplant out) Jul 28
Luffa Gourd Apr 11 Jun 6 (Transplant out) -
New Zealand Spinach Apr 25 Jun 6 (Transplant out) -
Fava Beans May 23 Apr 25 (Transplant out) Jun 18
Chayote Apr 25 Jun 6 (Transplant out) -
Corn Salad May 23 Apr 25 (Transplant out) Jul 13
Bitter Melon Apr 25 Jun 6 (Transplant out) -
Cardoon Apr 11 May 23 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Apr 11 May 30 (Transplant out) -
Cilantro - May 9 (Direct sow) Jul 23
Parsley Mar 28 Jun 6 (Transplant out) Jun 28
Dill - May 30 (Direct sow) Jul 13
Lemon Balm Apr 11 May 23 (Transplant out) -
Borage May 23 May 23 (Transplant out) Jul 18
Chervil May 23 May 2 (Transplant out) Jul 18
Lemongrass Mar 28 Jun 6 (Transplant out) -
Summer Savory Apr 11 May 23 (Transplant out) -
Marjoram Apr 11 May 30 (Transplant out) -
Lovage Apr 11 May 23 (Transplant out) Jun 13
Anise Hyssop Mar 28 May 23 (Transplant out) -
Shiso Apr 11 May 30 (Transplant out) -
Stevia Mar 28 Jun 6 (Transplant out) -
Chamomile Apr 11 May 9 (Transplant out) Jul 8
Tarragon May 23 May 23 (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 Winchester, Id, 7.5 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 83523 Local weather →