Growing Geraniums in Zone 10
When to plant and harvest geraniums in Zone 10— based on your zone's frost dates.
Zone 10 sits comfortably within geraniums' best range (Zones 3–11), so it grows well here on a standard schedule.
Geraniums 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
—
Free planting calendar
Put geraniums on your own planting calendar
A month-by-month Zone 10 chart with geraniums already on it — add the rest of your garden, then print it or save it as a PDF.
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Geraniums care at a glance
- Sunlight
- Full sun (6+ hours); tolerates part shade but blooms best with more sun
- Water
- Moderate; allow the top inch of soil to dry between waterings — overwatering is fatal
- Spacing
- 12–18 in apart
- Days to maturity
- 10–16 weeks from seed to first bloom
- Best zones
- 3–11 (tender perennial; perennial in zones 9–11, grown as annual elsewhere)
Growing geraniums in Zone 10: FAQs
Can you grow geraniums in Zone 10?＋
Zone 10 sits comfortably within geraniums' best range (Zones 3–11), so it grows well here on a standard schedule.
When should I plant geraniums 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 geraniums in Zone 10?＋
Harvest timing depends on your planting date and variety — geraniums typically matures in 10–16 weeks from seed to first bloom. See the full guide for harvest cues.
Full Geraniums 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.