Harman US

Planting Calendar for ZIP 78254

Based on your local frost dates - last spring frost around Feb 18, first fall frost around Dec 9 - here is when to plant 79 common crops near ZIP 78254.

Last spring frost
Feb 18
First fall frost
Dec 9
Hardiness zone
9a

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Jan 7 Feb 25 (Transplant out) -
Peppers Dec 24 Mar 4 (Transplant out) -
Cucumbers Jan 28 Feb 25 (Transplant out) Oct 1
Zucchini Jan 28 Feb 25 (Transplant out) Oct 6
Summer Squash Jan 28 Feb 25 (Transplant out) Oct 4
Winter Squash Jan 28 Feb 25 (Transplant out) -
Pumpkins Jan 28 Feb 25 (Transplant out) -
Green Beans - Feb 18 (Direct sow) Oct 1
Sweet Corn - Feb 25 (Direct sow) -
Melons Jan 28 Mar 4 (Transplant out) -
Watermelon Jan 28 Mar 4 (Transplant out) -
Okra - Mar 4 (Direct sow) -
Eggplant Dec 24 Mar 4 (Transplant out) -
Lettuce Jan 21 Jan 21 (Transplant out) Oct 6
Spinach - Jan 7 (Direct sow) Oct 11
Kale Jan 7 Jan 28 (Transplant out) Oct 1
Peas - Jan 7 (Direct sow) Sep 26
Carrots - Jan 28 (Direct sow) Sep 16
Beets - Jan 21 (Direct sow) Oct 1
Radishes - Jan 21 (Direct sow) Oct 28
Broccoli Jan 7 Feb 4 (Transplant out) Sep 21
Cauliflower Jan 7 Feb 4 (Transplant out) Sep 16
Cabbage Jan 7 Jan 28 (Transplant out) Sep 16
Onions Dec 10 Jan 21 (Transplant out) -
Potatoes - Feb 4 (Direct sow) -
Swiss Chard Jan 21 Feb 4 (Transplant out) Oct 1
Sweet Potatoes - Mar 11 (Direct sow) -
Brussels Sprouts Jan 7 Feb 4 (Transplant out) Aug 17
Celery Dec 10 Feb 25 (Transplant out) -
Leeks Dec 10 Feb 4 (Transplant out) Jul 28
Turnips - Feb 4 (Direct sow) Oct 6
Rutabaga - Feb 18 (Direct sow) Aug 22
Parsnips - Feb 4 (Direct sow) Jul 28
Kohlrabi Jan 21 Feb 4 (Transplant out) Oct 1
Collard Greens Jan 7 Feb 4 (Transplant out) Sep 21
Mustard Greens - Feb 4 (Direct sow) Oct 11
Arugula - Feb 4 (Direct sow) Oct 16
Bok Choy Jan 21 Feb 4 (Transplant out) Oct 6
Green Onions - Feb 4 (Direct sow) Sep 26
Tomatillos Jan 7 Feb 25 (Transplant out) -
Fennel Jan 21 Feb 4 (Transplant out) Sep 6
Popcorn Feb 18 Mar 4 (Transplant out) -
Black-Eyed Peas Feb 18 Mar 4 (Transplant out) Sep 6
Lima Beans Feb 18 Mar 4 (Transplant out) -
Edamame Feb 18 Mar 4 (Transplant out) -
Peanuts Feb 18 Mar 4 (Transplant out) -
Globe Artichoke Dec 24 Feb 4 (Transplant out) Aug 27
Horseradish Feb 18 Feb 4 (Transplant out) -
Ground Cherries Jan 7 Mar 4 (Transplant out) -
Radicchio Jan 14 Feb 4 (Transplant out) Sep 16
Endive Jan 14 Feb 4 (Transplant out) Aug 27
Watercress Jan 28 Feb 4 (Transplant out) Sep 26
Sorrel Jan 7 Jan 28 (Transplant out) Sep 26
Sunchokes Feb 18 Feb 4 (Transplant out) -
Malabar Spinach Jan 7 Mar 4 (Transplant out) -
Amaranth Greens Jan 28 Mar 4 (Transplant out) Oct 11
Luffa Gourd Jan 7 Mar 4 (Transplant out) -
New Zealand Spinach Jan 21 Mar 4 (Transplant out) -
Fava Beans Feb 18 Jan 21 (Transplant out) Sep 1
Chayote Jan 21 Mar 4 (Transplant out) -
Corn Salad Feb 18 Jan 21 (Transplant out) Sep 26
Bitter Melon Jan 21 Mar 4 (Transplant out) -
Cardoon Jan 7 Feb 18 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Jan 7 Feb 25 (Transplant out) -
Cilantro - Feb 4 (Direct sow) Oct 6
Parsley Dec 24 Mar 4 (Transplant out) Sep 11
Dill - Feb 25 (Direct sow) Sep 26
Lemon Balm Jan 7 Feb 18 (Transplant out) -
Borage Feb 18 Feb 18 (Transplant out) Oct 1
Chervil Feb 18 Jan 28 (Transplant out) Oct 1
Lemongrass Dec 24 Mar 4 (Transplant out) -
Summer Savory Jan 7 Feb 18 (Transplant out) -
Marjoram Jan 7 Feb 25 (Transplant out) -
Lovage Jan 7 Feb 18 (Transplant out) Aug 27
Anise Hyssop Dec 24 Feb 18 (Transplant out) -
Shiso Jan 7 Feb 25 (Transplant out) -
Stevia Dec 24 Mar 4 (Transplant out) -
Chamomile Jan 7 Feb 4 (Transplant out) Sep 21
Tarragon Feb 18 Feb 18 (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 San Antonio/Seaworld, Tx, 5.7 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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