When to Plant Oregano in Phoenix, Arizona (85021)
Location
Phoenix, Arizona
ZIP Code
85021
USDA Zone
9b
Last Frost
Wednesday, February 10, 2027
📅 Planting Calendar
Start Seeds Indoors Wednesday, December 16, 2026
Transplant Outdoors Wednesday, February 24, 2027
Pro Tip: Start Oregano seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Origanum vulgare
Days to Maturity 80 days
Mature Height 12-24"
Spread 18"
Type Spreading
Fruit Size N/A
☀️ Growing Requirements
☀️
Sun
Full Sun (6+ hours)
💧
Water
Low to Moderate
↔️
Spacing
12" apart
🌱
Planting Depth
0.125" deep
Seeds typically germinate in 7-14 days
🤝 Good Companions
PepperTomatoBasil
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Growing Oregano in Zone 9b
Oregano (Origanum vulgare) is a popular garden vegetable. In Phoenix, Arizona, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Wednesday, December 16, 2026.
Your average last frost date is Wednesday, February 10, 2027. Plan to transplant your Oregano seedlings outdoors around Wednesday, February 24, 2027, about 2 weeks after your last frost date.