Growing Onions in Zone 11
When to plant and harvest onions in Zone 11— based on your zone's frost dates.
Zone 11 runs warmer than onions' usual range (Zones 3–9). Heat can cut the season short, so focus on the cooler shoulder months.
Onions planting calendar for Zone 11
These months are derived from Zone 11's frost dates — last frost around None, first frost around None.
Start indoors
December
Sow outdoors
—
Transplant
January
Harvest
June
Onions care at a glance
- Sunlight
- Full sun
- Water
- 1 inch per week; stop as tops fall
- Spacing
- 4 in apart
- Days to maturity
- 90–120 days
- Best zones
- 3–9 (choose day-length type for your latitude)
Growing onions in Zone 11: FAQs
Can you grow onions in Zone 11?＋
Zone 11 runs warmer than onions' usual range (Zones 3–9). Heat can cut the season short, so focus on the cooler shoulder months.
When should I plant onions in Zone 11?＋
In Zone 11, start seeds indoors around December. Zone 11's last spring frost is typically None and its first fall frost around None, which sets the planting window.
When to harvest onions in Zone 11?＋
Expect to harvest onions in Zone 11 around June, depending on the season and variety.
Full Onions guide →
Complete care, problems, companions, and harvest tips.
Zone 11 overview →
Frost dates, climate, and everything to grow here.
June in Zone 11 →
What to sow, transplant, and harvest this month.