Harman US

Planting Calendar for ZIP 94592

Based on your local frost dates - last spring frost around Jan 17, first fall frost around Dec 27 - here is when to plant 79 common crops near ZIP 94592.

Last spring frost
Jan 17
First fall frost
Dec 27
Hardiness zone
9b

Vegetables

Crop Start seeds indoors Plant outside Fall planting by
Tomatoes Dec 6 Jan 24 (Transplant out) -
Peppers Nov 22 Jan 31 (Transplant out) -
Cucumbers Dec 27 Jan 24 (Transplant out) Oct 19
Zucchini Dec 27 Jan 24 (Transplant out) Oct 24
Summer Squash Dec 27 Jan 24 (Transplant out) Oct 22
Winter Squash Dec 27 Jan 24 (Transplant out) -
Pumpkins Dec 27 Jan 24 (Transplant out) -
Green Beans - Jan 17 (Direct sow) Oct 19
Sweet Corn - Jan 24 (Direct sow) -
Melons Dec 27 Jan 31 (Transplant out) -
Watermelon Dec 27 Jan 31 (Transplant out) -
Okra - Jan 31 (Direct sow) -
Eggplant Nov 22 Jan 31 (Transplant out) -
Lettuce Dec 20 Dec 20 (Transplant out) Oct 24
Spinach - Dec 6 (Direct sow) Oct 29
Kale Dec 6 Dec 27 (Transplant out) Oct 19
Peas - Dec 6 (Direct sow) Oct 14
Carrots - Dec 27 (Direct sow) Oct 4
Beets - Dec 20 (Direct sow) Oct 19
Radishes - Dec 20 (Direct sow) Nov 15
Broccoli Dec 6 Jan 3 (Transplant out) Oct 9
Cauliflower Dec 6 Jan 3 (Transplant out) Oct 4
Cabbage Dec 6 Dec 27 (Transplant out) Oct 4
Onions Nov 8 Dec 20 (Transplant out) -
Potatoes - Jan 3 (Direct sow) -
Swiss Chard Dec 20 Jan 3 (Transplant out) Oct 19
Sweet Potatoes - Feb 7 (Direct sow) -
Brussels Sprouts Dec 6 Jan 3 (Transplant out) Sep 4
Celery Nov 8 Jan 24 (Transplant out) -
Leeks Nov 8 Jan 3 (Transplant out) Aug 15
Turnips - Jan 3 (Direct sow) Oct 24
Rutabaga - Jan 17 (Direct sow) Sep 9
Parsnips - Jan 3 (Direct sow) Aug 15
Kohlrabi Dec 20 Jan 3 (Transplant out) Oct 19
Collard Greens Dec 6 Jan 3 (Transplant out) Oct 9
Mustard Greens - Jan 3 (Direct sow) Oct 29
Arugula - Jan 3 (Direct sow) Nov 3
Bok Choy Dec 20 Jan 3 (Transplant out) Oct 24
Green Onions - Jan 3 (Direct sow) Oct 14
Tomatillos Dec 6 Jan 24 (Transplant out) -
Fennel Dec 20 Jan 3 (Transplant out) Sep 24
Popcorn Jan 17 Jan 31 (Transplant out) -
Black-Eyed Peas Jan 17 Jan 31 (Transplant out) Sep 24
Lima Beans Jan 17 Jan 31 (Transplant out) -
Edamame Jan 17 Jan 31 (Transplant out) -
Peanuts Jan 17 Jan 31 (Transplant out) -
Globe Artichoke Nov 22 Jan 3 (Transplant out) Sep 14
Horseradish Jan 17 Jan 3 (Transplant out) -
Ground Cherries Dec 6 Jan 31 (Transplant out) -
Radicchio Dec 13 Jan 3 (Transplant out) Oct 4
Endive Dec 13 Jan 3 (Transplant out) Sep 14
Watercress Dec 27 Jan 3 (Transplant out) Oct 14
Sorrel Dec 6 Dec 27 (Transplant out) Oct 14
Sunchokes Jan 17 Jan 3 (Transplant out) -
Malabar Spinach Dec 6 Jan 31 (Transplant out) -
Amaranth Greens Dec 27 Jan 31 (Transplant out) Oct 29
Luffa Gourd Dec 6 Jan 31 (Transplant out) -
New Zealand Spinach Dec 20 Jan 31 (Transplant out) -
Fava Beans Jan 17 Dec 20 (Transplant out) Sep 19
Chayote Dec 20 Jan 31 (Transplant out) -
Corn Salad Jan 17 Dec 20 (Transplant out) Oct 14
Bitter Melon Dec 20 Jan 31 (Transplant out) -
Cardoon Dec 6 Jan 17 (Transplant out) -

Herbs

Crop Start seeds indoors Plant outside Fall planting by
Basil Dec 6 Jan 24 (Transplant out) -
Cilantro - Jan 3 (Direct sow) Oct 24
Parsley Nov 22 Jan 31 (Transplant out) Sep 29
Dill - Jan 24 (Direct sow) Oct 14
Lemon Balm Dec 6 Jan 17 (Transplant out) -
Borage Jan 17 Jan 17 (Transplant out) Oct 19
Chervil Jan 17 Dec 27 (Transplant out) Oct 19
Lemongrass Nov 22 Jan 31 (Transplant out) -
Summer Savory Dec 6 Jan 17 (Transplant out) -
Marjoram Dec 6 Jan 24 (Transplant out) -
Lovage Dec 6 Jan 17 (Transplant out) Sep 14
Anise Hyssop Nov 22 Jan 17 (Transplant out) -
Shiso Dec 6 Jan 24 (Transplant out) -
Stevia Nov 22 Jan 31 (Transplant out) -
Chamomile Dec 6 Jan 3 (Transplant out) Oct 9
Tarragon Jan 17 Jan 17 (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 Vallejo, Ca, 5.4 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.

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