Harman US

Planting Calendar for ZIP 15868

Based on your local frost dates - last spring frost around May 7, first fall frost around Oct 15 - here is when to plant 79 common crops near ZIP 15868.

Last spring frost
May 7
First fall frost
Oct 15
Hardiness zone
6a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Mar 26 May 14 (Transplant out) -
Peppers Mar 12 May 21 (Transplant out) -
Cucumbers Apr 16 May 14 (Transplant out) Aug 7
Zucchini Apr 16 May 14 (Transplant out) Aug 12
Summer Squash Apr 16 May 14 (Transplant out) Aug 10
Winter Squash Apr 16 May 14 (Transplant out) -
Pumpkins Apr 16 May 14 (Transplant out) -
Green Beans - May 7 (Direct sow) Aug 7
Sweet Corn - May 14 (Direct sow) -
Melons Apr 16 May 21 (Transplant out) -
Watermelon Apr 16 May 21 (Transplant out) -
Okra - May 21 (Direct sow) -
Eggplant Mar 12 May 21 (Transplant out) -
Lettuce Apr 9 Apr 9 (Transplant out) Aug 12
Spinach - Mar 26 (Direct sow) Aug 17
Kale Mar 26 Apr 16 (Transplant out) Aug 7
Peas - Mar 26 (Direct sow) Aug 2
Carrots - Apr 16 (Direct sow) Jul 23
Beets - Apr 9 (Direct sow) Aug 7
Radishes - Apr 9 (Direct sow) Sep 3
Broccoli Mar 26 Apr 23 (Transplant out) Jul 28
Cauliflower Mar 26 Apr 23 (Transplant out) Jul 23
Cabbage Mar 26 Apr 16 (Transplant out) Jul 23
Onions Feb 26 Apr 9 (Transplant out) -
Potatoes - Apr 23 (Direct sow) -
Swiss Chard Apr 9 Apr 23 (Transplant out) Aug 7
Sweet Potatoes - May 28 (Direct sow) -
Brussels Sprouts Mar 26 Apr 23 (Transplant out) Jun 23
Celery Feb 26 May 14 (Transplant out) -
Leeks Feb 26 Apr 23 (Transplant out) Jun 3
Turnips - Apr 23 (Direct sow) Aug 12
Rutabaga - May 7 (Direct sow) Jun 28
Parsnips - Apr 23 (Direct sow) Jun 3
Kohlrabi Apr 9 Apr 23 (Transplant out) Aug 7
Collard Greens Mar 26 Apr 23 (Transplant out) Jul 28
Mustard Greens - Apr 23 (Direct sow) Aug 17
Arugula - Apr 23 (Direct sow) Aug 22
Bok Choy Apr 9 Apr 23 (Transplant out) Aug 12
Green Onions - Apr 23 (Direct sow) Aug 2
Tomatillos Mar 26 May 14 (Transplant out) -
Fennel Apr 9 Apr 23 (Transplant out) Jul 13
Popcorn May 7 May 21 (Transplant out) -
Black-Eyed Peas May 7 May 21 (Transplant out) Jul 13
Lima Beans May 7 May 21 (Transplant out) -
Edamame May 7 May 21 (Transplant out) -
Peanuts May 7 May 21 (Transplant out) -
Globe Artichoke Mar 12 Apr 23 (Transplant out) Jul 3
Horseradish May 7 Apr 23 (Transplant out) -
Ground Cherries Mar 26 May 21 (Transplant out) -
Radicchio Apr 2 Apr 23 (Transplant out) Jul 23
Endive Apr 2 Apr 23 (Transplant out) Jul 3
Watercress Apr 16 Apr 23 (Transplant out) Aug 2
Sorrel Mar 26 Apr 16 (Transplant out) Aug 2
Sunchokes May 7 Apr 23 (Transplant out) -
Malabar Spinach Mar 26 May 21 (Transplant out) -
Amaranth Greens Apr 16 May 21 (Transplant out) Aug 17
Luffa Gourd Mar 26 May 21 (Transplant out) -
New Zealand Spinach Apr 9 May 21 (Transplant out) -
Fava Beans May 7 Apr 9 (Transplant out) Jul 8
Chayote Apr 9 May 21 (Transplant out) -
Corn Salad May 7 Apr 9 (Transplant out) Aug 2
Bitter Melon Apr 9 May 21 (Transplant out) -
Cardoon Mar 26 May 7 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Mar 26 May 14 (Transplant out) -
Cilantro - Apr 23 (Direct sow) Aug 12
Parsley Mar 12 May 21 (Transplant out) Jul 18
Dill - May 14 (Direct sow) Aug 2
Lemon Balm Mar 26 May 7 (Transplant out) -
Borage May 7 May 7 (Transplant out) Aug 7
Chervil May 7 Apr 16 (Transplant out) Aug 7
Lemongrass Mar 12 May 21 (Transplant out) -
Summer Savory Mar 26 May 7 (Transplant out) -
Marjoram Mar 26 May 14 (Transplant out) -
Lovage Mar 26 May 7 (Transplant out) Jul 3
Anise Hyssop Mar 12 May 7 (Transplant out) -
Shiso Mar 26 May 14 (Transplant out) -
Stevia Mar 12 May 21 (Transplant out) -
Chamomile Mar 26 Apr 23 (Transplant out) Jul 28
Tarragon May 7 May 7 (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 Emporium, Pa, 17.1 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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