Harman US

Planting Calendar for ZIP 83119

Based on your local frost dates - last spring frost around Jun 20, first fall frost around Sep 1 - here is when to plant 79 common crops near ZIP 83119.

Last spring frost
Jun 20
First fall frost
Sep 1
Hardiness zone
5a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes May 9 Jun 27 (Transplant out) -
Peppers Apr 25 Jul 4 (Transplant out) -
Cucumbers May 30 Jun 27 (Transplant out) Jun 24
Zucchini May 30 Jun 27 (Transplant out) Jun 29
Summer Squash May 30 Jun 27 (Transplant out) Jun 27
Winter Squash May 30 Jun 27 (Transplant out) -
Pumpkins May 30 Jun 27 (Transplant out) -
Green Beans - Jun 20 (Direct sow) Jun 24
Sweet Corn - Jun 27 (Direct sow) -
Melons May 30 Jul 4 (Transplant out) -
Watermelon May 30 Jul 4 (Transplant out) -
Okra - Jul 4 (Direct sow) -
Eggplant Apr 25 Jul 4 (Transplant out) -
Lettuce May 23 May 23 (Transplant out) Jun 29
Spinach - May 9 (Direct sow) Jul 4
Kale May 9 May 30 (Transplant out) Jun 24
Peas - May 9 (Direct sow) Jun 19
Carrots - May 30 (Direct sow) Jun 9
Beets - May 23 (Direct sow) Jun 24
Radishes - May 23 (Direct sow) Jul 21
Broccoli May 9 Jun 6 (Transplant out) Jun 14
Cauliflower May 9 Jun 6 (Transplant out) Jun 9
Cabbage May 9 May 30 (Transplant out) Jun 9
Onions Apr 11 May 23 (Transplant out) -
Potatoes - Jun 6 (Direct sow) -
Swiss Chard May 23 Jun 6 (Transplant out) Jun 24
Sweet Potatoes - Jul 11 (Direct sow) -
Brussels Sprouts May 9 Jun 6 (Transplant out) May 10
Celery Apr 11 Jun 27 (Transplant out) -
Leeks Apr 11 Jun 6 (Transplant out) Apr 20
Turnips - Jun 6 (Direct sow) Jun 29
Rutabaga - Jun 20 (Direct sow) May 15
Parsnips - Jun 6 (Direct sow) Apr 20
Kohlrabi May 23 Jun 6 (Transplant out) Jun 24
Collard Greens May 9 Jun 6 (Transplant out) Jun 14
Mustard Greens - Jun 6 (Direct sow) Jul 4
Arugula - Jun 6 (Direct sow) Jul 9
Bok Choy May 23 Jun 6 (Transplant out) Jun 29
Green Onions - Jun 6 (Direct sow) Jun 19
Tomatillos May 9 Jun 27 (Transplant out) -
Fennel May 23 Jun 6 (Transplant out) May 30
Popcorn Jun 20 Jul 4 (Transplant out) -
Black-Eyed Peas Jun 20 Jul 4 (Transplant out) May 30
Lima Beans Jun 20 Jul 4 (Transplant out) -
Edamame Jun 20 Jul 4 (Transplant out) -
Peanuts Jun 20 Jul 4 (Transplant out) -
Globe Artichoke Apr 25 Jun 6 (Transplant out) May 20
Horseradish Jun 20 Jun 6 (Transplant out) -
Ground Cherries May 9 Jul 4 (Transplant out) -
Radicchio May 16 Jun 6 (Transplant out) Jun 9
Endive May 16 Jun 6 (Transplant out) May 20
Watercress May 30 Jun 6 (Transplant out) Jun 19
Sorrel May 9 May 30 (Transplant out) Jun 19
Sunchokes Jun 20 Jun 6 (Transplant out) -
Malabar Spinach May 9 Jul 4 (Transplant out) -
Amaranth Greens May 30 Jul 4 (Transplant out) Jul 4
Luffa Gourd May 9 Jul 4 (Transplant out) -
New Zealand Spinach May 23 Jul 4 (Transplant out) -
Fava Beans Jun 20 May 23 (Transplant out) May 25
Chayote May 23 Jul 4 (Transplant out) -
Corn Salad Jun 20 May 23 (Transplant out) Jun 19
Bitter Melon May 23 Jul 4 (Transplant out) -
Cardoon May 9 Jun 20 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil May 9 Jun 27 (Transplant out) -
Cilantro - Jun 6 (Direct sow) Jun 29
Parsley Apr 25 Jul 4 (Transplant out) Jun 4
Dill - Jun 27 (Direct sow) Jun 19
Lemon Balm May 9 Jun 20 (Transplant out) -
Borage Jun 20 Jun 20 (Transplant out) Jun 24
Chervil Jun 20 May 30 (Transplant out) Jun 24
Lemongrass Apr 25 Jul 4 (Transplant out) -
Summer Savory May 9 Jun 20 (Transplant out) -
Marjoram May 9 Jun 27 (Transplant out) -
Lovage May 9 Jun 20 (Transplant out) May 20
Anise Hyssop Apr 25 Jun 20 (Transplant out) -
Shiso May 9 Jun 27 (Transplant out) -
Stevia Apr 25 Jul 4 (Transplant out) -
Chamomile May 9 Jun 6 (Transplant out) Jun 14
Tarragon Jun 20 Jun 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 Afton, Wy, 7 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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