Quick planting window
| Start indoors | February to March |
|---|---|
| Transplant | March to April |
| Sow seeds | Usually not recommended for this crop in a short-season garden |
| Estimated harvest | June to July |
| Risk | Medium risk |
Month calendar
Scan the year by month to see seed starting, sowing, transplanting, and harvest timing.
Tomato is frost sensitive. Wait until the conservative transplant or sowing window for California.
Next: ZIP code personalization
This is a state-level planning window based on typical frost timing and crop rules. Use local Extension guidance or a ZIP code frost-date tool before planting.
Planning notes
Covered crops
15
Covered states
California
Frost window
February to April / November to December
Use this as a state-level starter window; coastal and inland gardens can differ by weeks.
Tomato growing notes
The calendar window is only the first step. These growing details affect survival, plant vigor, and harvest quality.
Sun
Full sun, ideally 6-8+ hours.
Soil
Rich, well-drained soil with compost.
Spacing
18-24 inches for compact types; 24-36 inches for vigorous vines.
Container
Use a 5+ gallon container for patio types; larger is better.
Watering
Water deeply and consistently; avoid wetting leaves late in the day.
Common mistake
Transplanting before nights are warm enough.
Beginner tip
Harden seedlings off for 7-10 days before planting outside.
Month window table
| Crop | Spring transplant / sow | Spring harvest | Fall transplant / sow | Fall harvest |
|---|---|---|---|---|
| Tomato | March to April | June to July | August to September | October to November |
| Cucumber | March to April | May to June | August to September | October to November |
| Pepper | April to May | June to July | July to August | October to November |
| Lettuce | February to March | April to May | September to October | November to December |
| Carrot | February to March | May to June | September to October | November to December |
| Spinach | February to March | March to April | September to October | November to December |
| Green Bean | March to April | May to June | September to October | October to November |
| Zucchini | March to April | May to June | August to September | October to November |
| Potato | March | June to July | August to September | November to December |
| Broccoli | March | May to June | August to September | November to December |
| Kale | February to March | April to May | September to October | October to November |
| Onion | February to March | June to July | August to September | November to December |
| Garlic | October to November | June to July | October to November | June to July |
| Corn | March to April | June to July | August to September | November to December |
| Radish | February to March | March to April | October to November | November to December |
Sources and limits
This page uses California state-level frost windows, USDA zone ranges, and crop rules for planning. It does not replace local Extension or county-level guidance.
FAQ
When should I start spring planting in California?
Use the last frost window, usually February to April, as the planning anchor. Hardy crops can start earlier; frost-sensitive crops should wait for warmer soil and nights.
When should I plan fall planting in California?
Count backward from the first frost window, usually November to December. Long-season and frost-sensitive crops need more lead time.
Which vegetables are easiest in California?
Start with easier crops such as cucumber, lettuce, spinach, green bean, zucchini. The best choice still depends on season and local conditions.
How should I handle summer heat in California?
Summer heat is less severe than in hot southern states, but cool-season crops still benefit from avoiding the hottest weeks.
Can I grow a fall garden in California?
Yes. Use November to December as the cutoff anchor and leave buffer time for germination, transplant shock, and maturity.
Do local differences matter?
Use this as a state-level starter window; coastal and inland gardens can differ by weeks.
Does this replace local Extension guidance?
No. Use this as a first-pass planning calendar, then confirm with local Extension, county guidance, or a ZIP-code frost-date tool before planting.