Planting Calendar for ZIP 91917
Based on your local frost dates - last spring frost around Feb 12, first fall frost around Dec 24 - here is when to plant 79 common crops near ZIP 91917.
Last spring frost
Feb 12
First fall frost
Dec 24
Hardiness zone
10a
Vegetables
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Tomatoes | Jan 1 | Feb 19 (Transplant out) | - |
| Peppers | Dec 18 | Feb 26 (Transplant out) | - |
| Cucumbers | Jan 22 | Feb 19 (Transplant out) | Oct 16 |
| Zucchini | Jan 22 | Feb 19 (Transplant out) | Oct 21 |
| Summer Squash | Jan 22 | Feb 19 (Transplant out) | Oct 19 |
| Winter Squash | Jan 22 | Feb 19 (Transplant out) | - |
| Pumpkins | Jan 22 | Feb 19 (Transplant out) | - |
| Green Beans | - | Feb 12 (Direct sow) | Oct 16 |
| Sweet Corn | - | Feb 19 (Direct sow) | - |
| Melons | Jan 22 | Feb 26 (Transplant out) | - |
| Watermelon | Jan 22 | Feb 26 (Transplant out) | - |
| Okra | - | Feb 26 (Direct sow) | - |
| Eggplant | Dec 18 | Feb 26 (Transplant out) | - |
| Lettuce | Jan 15 | Jan 15 (Transplant out) | Oct 21 |
| Spinach | - | Jan 1 (Direct sow) | Oct 26 |
| Kale | Jan 1 | Jan 22 (Transplant out) | Oct 16 |
| Peas | - | Jan 1 (Direct sow) | Oct 11 |
| Carrots | - | Jan 22 (Direct sow) | Oct 1 |
| Beets | - | Jan 15 (Direct sow) | Oct 16 |
| Radishes | - | Jan 15 (Direct sow) | Nov 12 |
| Broccoli | Jan 1 | Jan 29 (Transplant out) | Oct 6 |
| Cauliflower | Jan 1 | Jan 29 (Transplant out) | Oct 1 |
| Cabbage | Jan 1 | Jan 22 (Transplant out) | Oct 1 |
| Onions | Dec 4 | Jan 15 (Transplant out) | - |
| Potatoes | - | Jan 29 (Direct sow) | - |
| Swiss Chard | Jan 15 | Jan 29 (Transplant out) | Oct 16 |
| Sweet Potatoes | - | Mar 5 (Direct sow) | - |
| Brussels Sprouts | Jan 1 | Jan 29 (Transplant out) | Sep 1 |
| Celery | Dec 4 | Feb 19 (Transplant out) | - |
| Leeks | Dec 4 | Jan 29 (Transplant out) | Aug 12 |
| Turnips | - | Jan 29 (Direct sow) | Oct 21 |
| Rutabaga | - | Feb 12 (Direct sow) | Sep 6 |
| Parsnips | - | Jan 29 (Direct sow) | Aug 12 |
| Kohlrabi | Jan 15 | Jan 29 (Transplant out) | Oct 16 |
| Collard Greens | Jan 1 | Jan 29 (Transplant out) | Oct 6 |
| Mustard Greens | - | Jan 29 (Direct sow) | Oct 26 |
| Arugula | - | Jan 29 (Direct sow) | Oct 31 |
| Bok Choy | Jan 15 | Jan 29 (Transplant out) | Oct 21 |
| Green Onions | - | Jan 29 (Direct sow) | Oct 11 |
| Tomatillos | Jan 1 | Feb 19 (Transplant out) | - |
| Fennel | Jan 15 | Jan 29 (Transplant out) | Sep 21 |
| Popcorn | Feb 12 | Feb 26 (Transplant out) | - |
| Black-Eyed Peas | Feb 12 | Feb 26 (Transplant out) | Sep 21 |
| Lima Beans | Feb 12 | Feb 26 (Transplant out) | - |
| Edamame | Feb 12 | Feb 26 (Transplant out) | - |
| Peanuts | Feb 12 | Feb 26 (Transplant out) | - |
| Globe Artichoke | Dec 18 | Jan 29 (Transplant out) | Sep 11 |
| Horseradish | Feb 12 | Jan 29 (Transplant out) | - |
| Ground Cherries | Jan 1 | Feb 26 (Transplant out) | - |
| Radicchio | Jan 8 | Jan 29 (Transplant out) | Oct 1 |
| Endive | Jan 8 | Jan 29 (Transplant out) | Sep 11 |
| Watercress | Jan 22 | Jan 29 (Transplant out) | Oct 11 |
| Sorrel | Jan 1 | Jan 22 (Transplant out) | Oct 11 |
| Sunchokes | Feb 12 | Jan 29 (Transplant out) | - |
| Malabar Spinach | Jan 1 | Feb 26 (Transplant out) | - |
| Amaranth Greens | Jan 22 | Feb 26 (Transplant out) | Oct 26 |
| Luffa Gourd | Jan 1 | Feb 26 (Transplant out) | - |
| New Zealand Spinach | Jan 15 | Feb 26 (Transplant out) | - |
| Fava Beans | Feb 12 | Jan 15 (Transplant out) | Sep 16 |
| Chayote | Jan 15 | Feb 26 (Transplant out) | - |
| Corn Salad | Feb 12 | Jan 15 (Transplant out) | Oct 11 |
| Bitter Melon | Jan 15 | Feb 26 (Transplant out) | - |
| Cardoon | Jan 1 | Feb 12 (Transplant out) | - |
Herbs
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Basil | Jan 1 | Feb 19 (Transplant out) | - |
| Cilantro | - | Jan 29 (Direct sow) | Oct 21 |
| Parsley | Dec 18 | Feb 26 (Transplant out) | Sep 26 |
| Dill | - | Feb 19 (Direct sow) | Oct 11 |
| Lemon Balm | Jan 1 | Feb 12 (Transplant out) | - |
| Borage | Feb 12 | Feb 12 (Transplant out) | Oct 16 |
| Chervil | Feb 12 | Jan 22 (Transplant out) | Oct 16 |
| Lemongrass | Dec 18 | Feb 26 (Transplant out) | - |
| Summer Savory | Jan 1 | Feb 12 (Transplant out) | - |
| Marjoram | Jan 1 | Feb 19 (Transplant out) | - |
| Lovage | Jan 1 | Feb 12 (Transplant out) | Sep 11 |
| Anise Hyssop | Dec 18 | Feb 12 (Transplant out) | - |
| Shiso | Jan 1 | Feb 19 (Transplant out) | - |
| Stevia | Dec 18 | Feb 26 (Transplant out) | - |
| Chamomile | Jan 1 | Jan 29 (Transplant out) | Oct 6 |
| Tarragon | Feb 12 | Feb 12 (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 Alpine, Ca, 13.5 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.