Growing Sunflowers in Zone 10
When to plant and harvest sunflowers in Zone 10— based on your zone's frost dates.
Zone 10 sits comfortably within sunflowers' best range (Zones 2–11), so it grows well here on a standard schedule.
Sunflowers 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
—
Sow outdoors
February
Transplant
—
Harvest
—
Sunflowers care at a glance
- Sunlight
- Full sun (6+ hours)
- Water
- Moderate; deep but infrequent once established
- Spacing
- 6–18 in apart by variety
- Days to maturity
- 70–100 days
- Best zones
- 2–11
Growing sunflowers in Zone 10: FAQs
Can you grow sunflowers in Zone 10?＋
Zone 10 sits comfortably within sunflowers' best range (Zones 2–11), so it grows well here on a standard schedule.
When should I plant sunflowers in Zone 10?＋
In Zone 10, sow outdoors around February. 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 sunflowers in Zone 10?＋
Harvest timing depends on your planting date and variety — sunflowers typically matures in 70–100 days. See the full guide for harvest cues.
Full Sunflowers guide →
Complete care, problems, companions, and harvest tips.
Zone 10 overview →
Frost dates, climate, and everything to grow here.
June in Zone 10 →
What to sow, transplant, and harvest this month.