Growing Petunias in Zone 10
When to plant and harvest petunias in Zone 10— based on your zone's frost dates.
Zone 10 sits comfortably within petunias' best range (Zones 2–11), so it grows well here on a standard schedule.
Petunias planting calendar for Zone 10
These months are derived from Zone 10's frost dates — last frost around Rare or none, first frost around Rare — December to January in coldest years.
Start indoors
November
Sow outdoors
—
Transplant
February
Harvest
May
Free planting calendar
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A month-by-month Zone 10 chart with petunias already on it — add the rest of your garden, then print it or save it as a PDF.
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Petunias care at a glance
- Sunlight
- Full sun (6+ hours); a little afternoon shade helps in the hottest zones
- Water
- 1 inch per week in beds; containers may need daily watering in heat — they dislike both drought and soggy soil
- Spacing
- 12–18 in (mounding) to 18–24 in (trailing)
- Days to maturity
- 70–90 days from seed to first bloom; transplants bloom in 6–8 weeks
- Best zones
- 2–11 (warm-season annual; perennial only in zones 10–11)
Growing petunias in Zone 10: FAQs
Can you grow petunias in Zone 10?＋
Zone 10 sits comfortably within petunias' best range (Zones 2–11), so it grows well here on a standard schedule.
When should I plant petunias in Zone 10?＋
In Zone 10, start seeds indoors around November. Zone 10's last spring frost is typically Rare or none and its first fall frost around Rare — December to January in coldest years, which sets the planting window.
When to harvest petunias in Zone 10?＋
Expect to harvest petunias in Zone 10 around May, depending on the season and variety.
Full Petunias guide →
Complete care, problems, companions, and harvest tips.
Zone 10 overview →
Frost dates, climate, and everything to grow here.
October in Zone 10 →
What to sow, transplant, and harvest this month.