Growing Zucchini & Summer Squash in Zone 12
When to plant and harvest zucchini & summer squash in Zone 12— based on your zone's frost dates.
Zone 12 sits just outside zucchini & summer squash's ideal range (Zones 3–11), but a good harvest is achievable with careful timing and a little season extension.
Zucchini & Summer Squash planting calendar for Zone 12
These months are derived from Zone 12's frost dates — last frost around None, first frost around None.
Start indoors
—
Sow outdoors
January
Transplant
—
Harvest
March
Free planting calendar
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A month-by-month Zone 12 chart with zucchini & summer squash already on it — add the rest of your garden, then print it or save it as a PDF.
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Zucchini & Summer Squash care at a glance
- Sunlight
- Full sun (6+ hours)
- Water
- 1–2 inches per week, deep
- Spacing
- 24–36 in apart
- Days to maturity
- 45–60 days
- Best zones
- 3–11
Growing zucchini & summer squash in Zone 12: FAQs
Can you grow zucchini & summer squash in Zone 12?＋
Zone 12 sits just outside zucchini & summer squash's ideal range (Zones 3–11), but a good harvest is achievable with careful timing and a little season extension.
When should I plant zucchini & summer squash in Zone 12?＋
In Zone 12, sow outdoors around January. Zone 12's last spring frost is typically None and its first fall frost around None, which sets the planting window.
When to harvest zucchini & summer squash in Zone 12?＋
Expect to harvest zucchini & summer squash in Zone 12 around March, depending on the season and variety.
Full Zucchini & Summer Squash guide →
Complete care, problems, companions, and harvest tips.
Zone 12 overview →
Frost dates, climate, and everything to grow here.
October in Zone 12 →
What to sow, transplant, and harvest this month.