Planting Calendar for ZIP 91942
Based on your local frost dates - last spring frost around Jan 6, first fall frost around Dec 21 - here is when to plant 79 common crops near ZIP 91942.
Last spring frost
Jan 6
First fall frost
Dec 21
Hardiness zone
10b
Vegetables
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Tomatoes | Nov 25 | Jan 13 (Transplant out) | - |
| Peppers | Nov 11 | Jan 20 (Transplant out) | - |
| Cucumbers | Dec 16 | Jan 13 (Transplant out) | Oct 13 |
| Zucchini | Dec 16 | Jan 13 (Transplant out) | Oct 18 |
| Summer Squash | Dec 16 | Jan 13 (Transplant out) | Oct 16 |
| Winter Squash | Dec 16 | Jan 13 (Transplant out) | - |
| Pumpkins | Dec 16 | Jan 13 (Transplant out) | - |
| Green Beans | - | Jan 6 (Direct sow) | Oct 13 |
| Sweet Corn | - | Jan 13 (Direct sow) | - |
| Melons | Dec 16 | Jan 20 (Transplant out) | - |
| Watermelon | Dec 16 | Jan 20 (Transplant out) | - |
| Okra | - | Jan 20 (Direct sow) | - |
| Eggplant | Nov 11 | Jan 20 (Transplant out) | - |
| Lettuce | Dec 9 | Dec 9 (Transplant out) | Oct 18 |
| Spinach | - | Nov 25 (Direct sow) | Oct 23 |
| Kale | Nov 25 | Dec 16 (Transplant out) | Oct 13 |
| Peas | - | Nov 25 (Direct sow) | Oct 8 |
| Carrots | - | Dec 16 (Direct sow) | Sep 28 |
| Beets | - | Dec 9 (Direct sow) | Oct 13 |
| Radishes | - | Dec 9 (Direct sow) | Nov 9 |
| Broccoli | Nov 25 | Dec 23 (Transplant out) | Oct 3 |
| Cauliflower | Nov 25 | Dec 23 (Transplant out) | Sep 28 |
| Cabbage | Nov 25 | Dec 16 (Transplant out) | Sep 28 |
| Onions | Oct 28 | Dec 9 (Transplant out) | - |
| Potatoes | - | Dec 23 (Direct sow) | - |
| Swiss Chard | Dec 9 | Dec 23 (Transplant out) | Oct 13 |
| Sweet Potatoes | - | Jan 27 (Direct sow) | - |
| Brussels Sprouts | Nov 25 | Dec 23 (Transplant out) | Aug 29 |
| Celery | Oct 28 | Jan 13 (Transplant out) | - |
| Leeks | Oct 28 | Dec 23 (Transplant out) | Aug 9 |
| Turnips | - | Dec 23 (Direct sow) | Oct 18 |
| Rutabaga | - | Jan 6 (Direct sow) | Sep 3 |
| Parsnips | - | Dec 23 (Direct sow) | Aug 9 |
| Kohlrabi | Dec 9 | Dec 23 (Transplant out) | Oct 13 |
| Collard Greens | Nov 25 | Dec 23 (Transplant out) | Oct 3 |
| Mustard Greens | - | Dec 23 (Direct sow) | Oct 23 |
| Arugula | - | Dec 23 (Direct sow) | Oct 28 |
| Bok Choy | Dec 9 | Dec 23 (Transplant out) | Oct 18 |
| Green Onions | - | Dec 23 (Direct sow) | Oct 8 |
| Tomatillos | Nov 25 | Jan 13 (Transplant out) | - |
| Fennel | Dec 9 | Dec 23 (Transplant out) | Sep 18 |
| Popcorn | Jan 6 | Jan 20 (Transplant out) | - |
| Black-Eyed Peas | Jan 6 | Jan 20 (Transplant out) | Sep 18 |
| Lima Beans | Jan 6 | Jan 20 (Transplant out) | - |
| Edamame | Jan 6 | Jan 20 (Transplant out) | - |
| Peanuts | Jan 6 | Jan 20 (Transplant out) | - |
| Globe Artichoke | Nov 11 | Dec 23 (Transplant out) | Sep 8 |
| Horseradish | Jan 6 | Dec 23 (Transplant out) | - |
| Ground Cherries | Nov 25 | Jan 20 (Transplant out) | - |
| Radicchio | Dec 2 | Dec 23 (Transplant out) | Sep 28 |
| Endive | Dec 2 | Dec 23 (Transplant out) | Sep 8 |
| Watercress | Dec 16 | Dec 23 (Transplant out) | Oct 8 |
| Sorrel | Nov 25 | Dec 16 (Transplant out) | Oct 8 |
| Sunchokes | Jan 6 | Dec 23 (Transplant out) | - |
| Malabar Spinach | Nov 25 | Jan 20 (Transplant out) | - |
| Amaranth Greens | Dec 16 | Jan 20 (Transplant out) | Oct 23 |
| Luffa Gourd | Nov 25 | Jan 20 (Transplant out) | - |
| New Zealand Spinach | Dec 9 | Jan 20 (Transplant out) | - |
| Fava Beans | Jan 6 | Dec 9 (Transplant out) | Sep 13 |
| Chayote | Dec 9 | Jan 20 (Transplant out) | - |
| Corn Salad | Jan 6 | Dec 9 (Transplant out) | Oct 8 |
| Bitter Melon | Dec 9 | Jan 20 (Transplant out) | - |
| Cardoon | Nov 25 | Jan 6 (Transplant out) | - |
Herbs
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Basil | Nov 25 | Jan 13 (Transplant out) | - |
| Cilantro | - | Dec 23 (Direct sow) | Oct 18 |
| Parsley | Nov 11 | Jan 20 (Transplant out) | Sep 23 |
| Dill | - | Jan 13 (Direct sow) | Oct 8 |
| Lemon Balm | Nov 25 | Jan 6 (Transplant out) | - |
| Borage | Jan 6 | Jan 6 (Transplant out) | Oct 13 |
| Chervil | Jan 6 | Dec 16 (Transplant out) | Oct 13 |
| Lemongrass | Nov 11 | Jan 20 (Transplant out) | - |
| Summer Savory | Nov 25 | Jan 6 (Transplant out) | - |
| Marjoram | Nov 25 | Jan 13 (Transplant out) | - |
| Lovage | Nov 25 | Jan 6 (Transplant out) | Sep 8 |
| Anise Hyssop | Nov 11 | Jan 6 (Transplant out) | - |
| Shiso | Nov 25 | Jan 13 (Transplant out) | - |
| Stevia | Nov 11 | Jan 20 (Transplant out) | - |
| Chamomile | Nov 25 | Dec 23 (Transplant out) | Oct 3 |
| Tarragon | Jan 6 | Jan 6 (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 El Cajon, Ca, 5.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.