Harman US

Planting Calendar for ZIP 86442

Based on your local frost dates - last spring frost around Jan 4, first fall frost around Dec 23 - here is when to plant 79 common crops near ZIP 86442.

Last spring frost
Jan 4
First fall frost
Dec 23
Hardiness zone
10a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Nov 23 Jan 11 (Transplant out) -
Peppers Nov 9 Jan 18 (Transplant out) -
Cucumbers Dec 14 Jan 11 (Transplant out) Oct 15
Zucchini Dec 14 Jan 11 (Transplant out) Oct 20
Summer Squash Dec 14 Jan 11 (Transplant out) Oct 18
Winter Squash Dec 14 Jan 11 (Transplant out) -
Pumpkins Dec 14 Jan 11 (Transplant out) -
Green Beans - Jan 4 (Direct sow) Oct 15
Sweet Corn - Jan 11 (Direct sow) -
Melons Dec 14 Jan 18 (Transplant out) -
Watermelon Dec 14 Jan 18 (Transplant out) -
Okra - Jan 18 (Direct sow) -
Eggplant Nov 9 Jan 18 (Transplant out) -
Lettuce Dec 7 Dec 7 (Transplant out) Oct 20
Spinach - Nov 23 (Direct sow) Oct 25
Kale Nov 23 Dec 14 (Transplant out) Oct 15
Peas - Nov 23 (Direct sow) Oct 10
Carrots - Dec 14 (Direct sow) Sep 30
Beets - Dec 7 (Direct sow) Oct 15
Radishes - Dec 7 (Direct sow) Nov 11
Broccoli Nov 23 Dec 21 (Transplant out) Oct 5
Cauliflower Nov 23 Dec 21 (Transplant out) Sep 30
Cabbage Nov 23 Dec 14 (Transplant out) Sep 30
Onions Oct 26 Dec 7 (Transplant out) -
Potatoes - Dec 21 (Direct sow) -
Swiss Chard Dec 7 Dec 21 (Transplant out) Oct 15
Sweet Potatoes - Jan 25 (Direct sow) -
Brussels Sprouts Nov 23 Dec 21 (Transplant out) Aug 31
Celery Oct 26 Jan 11 (Transplant out) -
Leeks Oct 26 Dec 21 (Transplant out) Aug 11
Turnips - Dec 21 (Direct sow) Oct 20
Rutabaga - Jan 4 (Direct sow) Sep 5
Parsnips - Dec 21 (Direct sow) Aug 11
Kohlrabi Dec 7 Dec 21 (Transplant out) Oct 15
Collard Greens Nov 23 Dec 21 (Transplant out) Oct 5
Mustard Greens - Dec 21 (Direct sow) Oct 25
Arugula - Dec 21 (Direct sow) Oct 30
Bok Choy Dec 7 Dec 21 (Transplant out) Oct 20
Green Onions - Dec 21 (Direct sow) Oct 10
Tomatillos Nov 23 Jan 11 (Transplant out) -
Fennel Dec 7 Dec 21 (Transplant out) Sep 20
Popcorn Jan 4 Jan 18 (Transplant out) -
Black-Eyed Peas Jan 4 Jan 18 (Transplant out) Sep 20
Lima Beans Jan 4 Jan 18 (Transplant out) -
Edamame Jan 4 Jan 18 (Transplant out) -
Peanuts Jan 4 Jan 18 (Transplant out) -
Globe Artichoke Nov 9 Dec 21 (Transplant out) Sep 10
Horseradish Jan 4 Dec 21 (Transplant out) -
Ground Cherries Nov 23 Jan 18 (Transplant out) -
Radicchio Nov 30 Dec 21 (Transplant out) Sep 30
Endive Nov 30 Dec 21 (Transplant out) Sep 10
Watercress Dec 14 Dec 21 (Transplant out) Oct 10
Sorrel Nov 23 Dec 14 (Transplant out) Oct 10
Sunchokes Jan 4 Dec 21 (Transplant out) -
Malabar Spinach Nov 23 Jan 18 (Transplant out) -
Amaranth Greens Dec 14 Jan 18 (Transplant out) Oct 25
Luffa Gourd Nov 23 Jan 18 (Transplant out) -
New Zealand Spinach Dec 7 Jan 18 (Transplant out) -
Fava Beans Jan 4 Dec 7 (Transplant out) Sep 15
Chayote Dec 7 Jan 18 (Transplant out) -
Corn Salad Jan 4 Dec 7 (Transplant out) Oct 10
Bitter Melon Dec 7 Jan 18 (Transplant out) -
Cardoon Nov 23 Jan 4 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Nov 23 Jan 11 (Transplant out) -
Cilantro - Dec 21 (Direct sow) Oct 20
Parsley Nov 9 Jan 18 (Transplant out) Sep 25
Dill - Jan 11 (Direct sow) Oct 10
Lemon Balm Nov 23 Jan 4 (Transplant out) -
Borage Jan 4 Jan 4 (Transplant out) Oct 15
Chervil Jan 4 Dec 14 (Transplant out) Oct 15
Lemongrass Nov 9 Jan 18 (Transplant out) -
Summer Savory Nov 23 Jan 4 (Transplant out) -
Marjoram Nov 23 Jan 11 (Transplant out) -
Lovage Nov 23 Jan 4 (Transplant out) Sep 10
Anise Hyssop Nov 9 Jan 4 (Transplant out) -
Shiso Nov 23 Jan 11 (Transplant out) -
Stevia Nov 9 Jan 18 (Transplant out) -
Chamomile Nov 23 Dec 21 (Transplant out) Oct 5
Tarragon Jan 4 Jan 4 (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 Bullhead City, Az, 3.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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