Quick planting window
| Start indoors | February to March |
|---|---|
| Transplant | March to April |
| Sow seeds | March to April |
| Estimated harvest | May to June |
| Risk | Medium risk |
Month calendar
Scan the year by month to see seed starting, sowing, transplanting, and harvest timing.
Zucchini 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
Days to maturity
50
Covered states
20
Maturity range
28-240 days
Crop overview pages compare state windows; open a specific state page to see that state's frost dates, heat risk, and Extension source.
Zucchini growing notes
The calendar window is only the first step. These growing details affect survival, plant vigor, and harvest quality.
Sun
Full sun.
Soil
Rich, well-drained soil with compost.
Spacing
24-36 inches per plant.
Container
Use a large 10+ gallon container for compact varieties.
Watering
Water deeply and avoid prolonged drought stress.
Common mistake
Underestimating plant size and harvest frequency.
Beginner tip
Pick young fruits often to keep plants productive.
Month window table
| State | Spring transplant / sow | Spring harvest | Fall transplant / sow | Fall harvest |
|---|---|---|---|---|
| California | March to April | May to June | August to September | October to November |
| New York | May to June | July to August | July to August | September to October |
| Texas | March to April | May to June | August to September | October to November |
| Washington | May to June | July to August | July to August | September to October |
| New Jersey | May to June | July to August | July to August | September to October |
| Florida | February to March | April to May | September to October | November to December |
| North Carolina | April to May | June to July | August to September | October to November |
| Georgia | April to May | May to June | August to September | October to November |
| Illinois | May to June | June to July | July to August | September to October |
| Ohio | May to June | June to July | July to August | September to October |
| Pennsylvania | May to June | July to August | July to August | September to October |
| Michigan | May to June | July to August | July to August | September to October |
| Arizona | March to April | May to June | August to September | October to November |
| Oregon | May to June | June to July | July to August | September to October |
| Massachusetts | May to June | July to August | July to August | September to October |
| Minnesota | May to June | July to August | July to August | September to October |
| Virginia | April to May | June to July | August to September | September to October |
| Colorado | June to July | July to August | July to August | September to October |
| Tennessee | April to May | June to July | August to September | October to November |
| Missouri | April to May | June to July | July to August | September to October |
Sources and limits
This crop overview summarizes typical frost windows and crop rules across 20 states. Because it is not tied to one state, the links below point to representative state Extension sources; state and crop-state pages show the matching state source.
Note: this overview shows a sample of sources; each state page exposes its own Extension reference.
FAQ
When should I start zucchini indoors?
Zucchini is commonly started indoors about 3 weeks before the last frost date. The exact month changes by state.
Can I sow zucchini outdoors?
Zucchini can be sown outdoors when soil and nights are suitable. In California, the spring estimate is about March to April.
When should I transplant zucchini?
Zucchini is commonly transplanted about 2 weeks after the last frost date, after seedlings are hardened off.
How long does zucchini take to harvest?
Zucchini is listed at about 50 days to maturity. Cool weather, weak light, or stress can extend that timeline.
Is zucchini container friendly?
Yes. Use a large 10+ gallon container for compact varieties.
What is the most common zucchini mistake?
Underestimating plant size and harvest frequency.
Is zucchini better in spring or fall?
Spring is usually safer; fall planting needs enough warm days before first frost.
Is this ZIP-code accurate?
No. V1 uses conservative state-level windows and reserves ZIP-code frost dates, USDA zone matching, and reminders for the next phase.