Harman US

Planting Calendar for ZIP 68504

Based on your local frost dates - last spring frost around Apr 24, first fall frost around Oct 13 - here is when to plant 79 common crops near ZIP 68504.

Last spring frost
Apr 24
First fall frost
Oct 13
Hardiness zone
6a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Mar 13 May 1 (Transplant out) -
Peppers Feb 27 May 8 (Transplant out) -
Cucumbers Apr 3 May 1 (Transplant out) Aug 5
Zucchini Apr 3 May 1 (Transplant out) Aug 10
Summer Squash Apr 3 May 1 (Transplant out) Aug 8
Winter Squash Apr 3 May 1 (Transplant out) -
Pumpkins Apr 3 May 1 (Transplant out) -
Green Beans - Apr 24 (Direct sow) Aug 5
Sweet Corn - May 1 (Direct sow) -
Melons Apr 3 May 8 (Transplant out) -
Watermelon Apr 3 May 8 (Transplant out) -
Okra - May 8 (Direct sow) -
Eggplant Feb 27 May 8 (Transplant out) -
Lettuce Mar 27 Mar 27 (Transplant out) Aug 10
Spinach - Mar 13 (Direct sow) Aug 15
Kale Mar 13 Apr 3 (Transplant out) Aug 5
Peas - Mar 13 (Direct sow) Jul 31
Carrots - Apr 3 (Direct sow) Jul 21
Beets - Mar 27 (Direct sow) Aug 5
Radishes - Mar 27 (Direct sow) Sep 1
Broccoli Mar 13 Apr 10 (Transplant out) Jul 26
Cauliflower Mar 13 Apr 10 (Transplant out) Jul 21
Cabbage Mar 13 Apr 3 (Transplant out) Jul 21
Onions Feb 13 Mar 27 (Transplant out) -
Potatoes - Apr 10 (Direct sow) -
Swiss Chard Mar 27 Apr 10 (Transplant out) Aug 5
Sweet Potatoes - May 15 (Direct sow) -
Brussels Sprouts Mar 13 Apr 10 (Transplant out) Jun 21
Celery Feb 13 May 1 (Transplant out) -
Leeks Feb 13 Apr 10 (Transplant out) Jun 1
Turnips - Apr 10 (Direct sow) Aug 10
Rutabaga - Apr 24 (Direct sow) Jun 26
Parsnips - Apr 10 (Direct sow) Jun 1
Kohlrabi Mar 27 Apr 10 (Transplant out) Aug 5
Collard Greens Mar 13 Apr 10 (Transplant out) Jul 26
Mustard Greens - Apr 10 (Direct sow) Aug 15
Arugula - Apr 10 (Direct sow) Aug 20
Bok Choy Mar 27 Apr 10 (Transplant out) Aug 10
Green Onions - Apr 10 (Direct sow) Jul 31
Tomatillos Mar 13 May 1 (Transplant out) -
Fennel Mar 27 Apr 10 (Transplant out) Jul 11
Popcorn Apr 24 May 8 (Transplant out) -
Black-Eyed Peas Apr 24 May 8 (Transplant out) Jul 11
Lima Beans Apr 24 May 8 (Transplant out) -
Edamame Apr 24 May 8 (Transplant out) -
Peanuts Apr 24 May 8 (Transplant out) -
Globe Artichoke Feb 27 Apr 10 (Transplant out) Jul 1
Horseradish Apr 24 Apr 10 (Transplant out) -
Ground Cherries Mar 13 May 8 (Transplant out) -
Radicchio Mar 20 Apr 10 (Transplant out) Jul 21
Endive Mar 20 Apr 10 (Transplant out) Jul 1
Watercress Apr 3 Apr 10 (Transplant out) Jul 31
Sorrel Mar 13 Apr 3 (Transplant out) Jul 31
Sunchokes Apr 24 Apr 10 (Transplant out) -
Malabar Spinach Mar 13 May 8 (Transplant out) -
Amaranth Greens Apr 3 May 8 (Transplant out) Aug 15
Luffa Gourd Mar 13 May 8 (Transplant out) -
New Zealand Spinach Mar 27 May 8 (Transplant out) -
Fava Beans Apr 24 Mar 27 (Transplant out) Jul 6
Chayote Mar 27 May 8 (Transplant out) -
Corn Salad Apr 24 Mar 27 (Transplant out) Jul 31
Bitter Melon Mar 27 May 8 (Transplant out) -
Cardoon Mar 13 Apr 24 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Mar 13 May 1 (Transplant out) -
Cilantro - Apr 10 (Direct sow) Aug 10
Parsley Feb 27 May 8 (Transplant out) Jul 16
Dill - May 1 (Direct sow) Jul 31
Lemon Balm Mar 13 Apr 24 (Transplant out) -
Borage Apr 24 Apr 24 (Transplant out) Aug 5
Chervil Apr 24 Apr 3 (Transplant out) Aug 5
Lemongrass Feb 27 May 8 (Transplant out) -
Summer Savory Mar 13 Apr 24 (Transplant out) -
Marjoram Mar 13 May 1 (Transplant out) -
Lovage Mar 13 Apr 24 (Transplant out) Jul 1
Anise Hyssop Feb 27 Apr 24 (Transplant out) -
Shiso Mar 13 May 1 (Transplant out) -
Stevia Feb 27 May 8 (Transplant out) -
Chamomile Mar 13 Apr 10 (Transplant out) Jul 26
Tarragon Apr 24 Apr 24 (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 Lincoln Muni Ap, Ne, 4.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

Full frost dates for 68504 Local weather →