Planting Calendar for ZIP 92503
Based on your local frost dates - last spring frost around Jan 9, first fall frost around Dec 30 - here is when to plant 79 common crops near ZIP 92503.
Last spring frost
Jan 9
First fall frost
Dec 30
Hardiness zone
10a
Vegetables
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Tomatoes | Nov 28 | Jan 16 (Transplant out) | - |
| Peppers | Nov 14 | Jan 23 (Transplant out) | - |
| Cucumbers | Dec 19 | Jan 16 (Transplant out) | Oct 22 |
| Zucchini | Dec 19 | Jan 16 (Transplant out) | Oct 27 |
| Summer Squash | Dec 19 | Jan 16 (Transplant out) | Oct 25 |
| Winter Squash | Dec 19 | Jan 16 (Transplant out) | - |
| Pumpkins | Dec 19 | Jan 16 (Transplant out) | - |
| Green Beans | - | Jan 9 (Direct sow) | Oct 22 |
| Sweet Corn | - | Jan 16 (Direct sow) | - |
| Melons | Dec 19 | Jan 23 (Transplant out) | - |
| Watermelon | Dec 19 | Jan 23 (Transplant out) | - |
| Okra | - | Jan 23 (Direct sow) | - |
| Eggplant | Nov 14 | Jan 23 (Transplant out) | - |
| Lettuce | Dec 12 | Dec 12 (Transplant out) | Oct 27 |
| Spinach | - | Nov 28 (Direct sow) | Nov 1 |
| Kale | Nov 28 | Dec 19 (Transplant out) | Oct 22 |
| Peas | - | Nov 28 (Direct sow) | Oct 17 |
| Carrots | - | Dec 19 (Direct sow) | Oct 7 |
| Beets | - | Dec 12 (Direct sow) | Oct 22 |
| Radishes | - | Dec 12 (Direct sow) | Nov 18 |
| Broccoli | Nov 28 | Dec 26 (Transplant out) | Oct 12 |
| Cauliflower | Nov 28 | Dec 26 (Transplant out) | Oct 7 |
| Cabbage | Nov 28 | Dec 19 (Transplant out) | Oct 7 |
| Onions | Oct 31 | Dec 12 (Transplant out) | - |
| Potatoes | - | Dec 26 (Direct sow) | - |
| Swiss Chard | Dec 12 | Dec 26 (Transplant out) | Oct 22 |
| Sweet Potatoes | - | Jan 30 (Direct sow) | - |
| Brussels Sprouts | Nov 28 | Dec 26 (Transplant out) | Sep 7 |
| Celery | Oct 31 | Jan 16 (Transplant out) | - |
| Leeks | Oct 31 | Dec 26 (Transplant out) | Aug 18 |
| Turnips | - | Dec 26 (Direct sow) | Oct 27 |
| Rutabaga | - | Jan 9 (Direct sow) | Sep 12 |
| Parsnips | - | Dec 26 (Direct sow) | Aug 18 |
| Kohlrabi | Dec 12 | Dec 26 (Transplant out) | Oct 22 |
| Collard Greens | Nov 28 | Dec 26 (Transplant out) | Oct 12 |
| Mustard Greens | - | Dec 26 (Direct sow) | Nov 1 |
| Arugula | - | Dec 26 (Direct sow) | Nov 6 |
| Bok Choy | Dec 12 | Dec 26 (Transplant out) | Oct 27 |
| Green Onions | - | Dec 26 (Direct sow) | Oct 17 |
| Tomatillos | Nov 28 | Jan 16 (Transplant out) | - |
| Fennel | Dec 12 | Dec 26 (Transplant out) | Sep 27 |
| Popcorn | Jan 9 | Jan 23 (Transplant out) | - |
| Black-Eyed Peas | Jan 9 | Jan 23 (Transplant out) | Sep 27 |
| Lima Beans | Jan 9 | Jan 23 (Transplant out) | - |
| Edamame | Jan 9 | Jan 23 (Transplant out) | - |
| Peanuts | Jan 9 | Jan 23 (Transplant out) | - |
| Globe Artichoke | Nov 14 | Dec 26 (Transplant out) | Sep 17 |
| Horseradish | Jan 9 | Dec 26 (Transplant out) | - |
| Ground Cherries | Nov 28 | Jan 23 (Transplant out) | - |
| Radicchio | Dec 5 | Dec 26 (Transplant out) | Oct 7 |
| Endive | Dec 5 | Dec 26 (Transplant out) | Sep 17 |
| Watercress | Dec 19 | Dec 26 (Transplant out) | Oct 17 |
| Sorrel | Nov 28 | Dec 19 (Transplant out) | Oct 17 |
| Sunchokes | Jan 9 | Dec 26 (Transplant out) | - |
| Malabar Spinach | Nov 28 | Jan 23 (Transplant out) | - |
| Amaranth Greens | Dec 19 | Jan 23 (Transplant out) | Nov 1 |
| Luffa Gourd | Nov 28 | Jan 23 (Transplant out) | - |
| New Zealand Spinach | Dec 12 | Jan 23 (Transplant out) | - |
| Fava Beans | Jan 9 | Dec 12 (Transplant out) | Sep 22 |
| Chayote | Dec 12 | Jan 23 (Transplant out) | - |
| Corn Salad | Jan 9 | Dec 12 (Transplant out) | Oct 17 |
| Bitter Melon | Dec 12 | Jan 23 (Transplant out) | - |
| Cardoon | Nov 28 | Jan 9 (Transplant out) | - |
Herbs
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Basil | Nov 28 | Jan 16 (Transplant out) | - |
| Cilantro | - | Dec 26 (Direct sow) | Oct 27 |
| Parsley | Nov 14 | Jan 23 (Transplant out) | Oct 2 |
| Dill | - | Jan 16 (Direct sow) | Oct 17 |
| Lemon Balm | Nov 28 | Jan 9 (Transplant out) | - |
| Borage | Jan 9 | Jan 9 (Transplant out) | Oct 22 |
| Chervil | Jan 9 | Dec 19 (Transplant out) | Oct 22 |
| Lemongrass | Nov 14 | Jan 23 (Transplant out) | - |
| Summer Savory | Nov 28 | Jan 9 (Transplant out) | - |
| Marjoram | Nov 28 | Jan 16 (Transplant out) | - |
| Lovage | Nov 28 | Jan 9 (Transplant out) | Sep 17 |
| Anise Hyssop | Nov 14 | Jan 9 (Transplant out) | - |
| Shiso | Nov 28 | Jan 16 (Transplant out) | - |
| Stevia | Nov 14 | Jan 23 (Transplant out) | - |
| Chamomile | Nov 28 | Dec 26 (Transplant out) | Oct 12 |
| Tarragon | Jan 9 | Jan 9 (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 Riverside Muni Ap, Ca, 4.8 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.