Harman US

Planting Calendar for ZIP 74039

Based on your local frost dates - last spring frost around Apr 9, first fall frost around Oct 25 - here is when to plant 79 common crops near ZIP 74039.

Last spring frost
Apr 9
First fall frost
Oct 25
Hardiness zone
7b

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Feb 26 Apr 16 (Transplant out) -
Peppers Feb 12 Apr 23 (Transplant out) -
Cucumbers Mar 19 Apr 16 (Transplant out) Aug 17
Zucchini Mar 19 Apr 16 (Transplant out) Aug 22
Summer Squash Mar 19 Apr 16 (Transplant out) Aug 20
Winter Squash Mar 19 Apr 16 (Transplant out) -
Pumpkins Mar 19 Apr 16 (Transplant out) -
Green Beans - Apr 9 (Direct sow) Aug 17
Sweet Corn - Apr 16 (Direct sow) -
Melons Mar 19 Apr 23 (Transplant out) -
Watermelon Mar 19 Apr 23 (Transplant out) -
Okra - Apr 23 (Direct sow) -
Eggplant Feb 12 Apr 23 (Transplant out) -
Lettuce Mar 12 Mar 12 (Transplant out) Aug 22
Spinach - Feb 26 (Direct sow) Aug 27
Kale Feb 26 Mar 19 (Transplant out) Aug 17
Peas - Feb 26 (Direct sow) Aug 12
Carrots - Mar 19 (Direct sow) Aug 2
Beets - Mar 12 (Direct sow) Aug 17
Radishes - Mar 12 (Direct sow) Sep 13
Broccoli Feb 26 Mar 26 (Transplant out) Aug 7
Cauliflower Feb 26 Mar 26 (Transplant out) Aug 2
Cabbage Feb 26 Mar 19 (Transplant out) Aug 2
Onions Jan 29 Mar 12 (Transplant out) -
Potatoes - Mar 26 (Direct sow) -
Swiss Chard Mar 12 Mar 26 (Transplant out) Aug 17
Sweet Potatoes - Apr 30 (Direct sow) -
Brussels Sprouts Feb 26 Mar 26 (Transplant out) Jul 3
Celery Jan 29 Apr 16 (Transplant out) -
Leeks Jan 29 Mar 26 (Transplant out) Jun 13
Turnips - Mar 26 (Direct sow) Aug 22
Rutabaga - Apr 9 (Direct sow) Jul 8
Parsnips - Mar 26 (Direct sow) Jun 13
Kohlrabi Mar 12 Mar 26 (Transplant out) Aug 17
Collard Greens Feb 26 Mar 26 (Transplant out) Aug 7
Mustard Greens - Mar 26 (Direct sow) Aug 27
Arugula - Mar 26 (Direct sow) Sep 1
Bok Choy Mar 12 Mar 26 (Transplant out) Aug 22
Green Onions - Mar 26 (Direct sow) Aug 12
Tomatillos Feb 26 Apr 16 (Transplant out) -
Fennel Mar 12 Mar 26 (Transplant out) Jul 23
Popcorn Apr 9 Apr 23 (Transplant out) -
Black-Eyed Peas Apr 9 Apr 23 (Transplant out) Jul 23
Lima Beans Apr 9 Apr 23 (Transplant out) -
Edamame Apr 9 Apr 23 (Transplant out) -
Peanuts Apr 9 Apr 23 (Transplant out) -
Globe Artichoke Feb 12 Mar 26 (Transplant out) Jul 13
Horseradish Apr 9 Mar 26 (Transplant out) -
Ground Cherries Feb 26 Apr 23 (Transplant out) -
Radicchio Mar 5 Mar 26 (Transplant out) Aug 2
Endive Mar 5 Mar 26 (Transplant out) Jul 13
Watercress Mar 19 Mar 26 (Transplant out) Aug 12
Sorrel Feb 26 Mar 19 (Transplant out) Aug 12
Sunchokes Apr 9 Mar 26 (Transplant out) -
Malabar Spinach Feb 26 Apr 23 (Transplant out) -
Amaranth Greens Mar 19 Apr 23 (Transplant out) Aug 27
Luffa Gourd Feb 26 Apr 23 (Transplant out) -
New Zealand Spinach Mar 12 Apr 23 (Transplant out) -
Fava Beans Apr 9 Mar 12 (Transplant out) Jul 18
Chayote Mar 12 Apr 23 (Transplant out) -
Corn Salad Apr 9 Mar 12 (Transplant out) Aug 12
Bitter Melon Mar 12 Apr 23 (Transplant out) -
Cardoon Feb 26 Apr 9 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Feb 26 Apr 16 (Transplant out) -
Cilantro - Mar 26 (Direct sow) Aug 22
Parsley Feb 12 Apr 23 (Transplant out) Jul 28
Dill - Apr 16 (Direct sow) Aug 12
Lemon Balm Feb 26 Apr 9 (Transplant out) -
Borage Apr 9 Apr 9 (Transplant out) Aug 17
Chervil Apr 9 Mar 19 (Transplant out) Aug 17
Lemongrass Feb 12 Apr 23 (Transplant out) -
Summer Savory Feb 26 Apr 9 (Transplant out) -
Marjoram Feb 26 Apr 16 (Transplant out) -
Lovage Feb 26 Apr 9 (Transplant out) Jul 13
Anise Hyssop Feb 12 Apr 9 (Transplant out) -
Shiso Feb 26 Apr 16 (Transplant out) -
Stevia Feb 12 Apr 23 (Transplant out) -
Chamomile Feb 26 Mar 26 (Transplant out) Aug 7
Tarragon Apr 9 Apr 9 (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 Bristow, Ok, 10 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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