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When to Plant Marjoram in Zone 12B

USDA Zone

12B

Cities Covered

53

Avg Last Frost

Friday, January 1, 2027

Plant Type

Indoor Start

📅 Planting Calendar for Zone 12B

Start Seeds Indoors Friday, November 6, 2026
Transplant Outdoors Friday, January 15, 2027

Pro Tip: Start Marjoram seeds indoors 8 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Origanum majorana
Days to Maturity 60 days
Sun Requirements Full Sun (6+ hours)
Plant Spacing 12" apart

🤝 Companion Plants for Marjoram

Good Companions

PepperTomatoBasilBean
See the full companion planting guide for Marjoram →

Cities in Zone 12B

Other Plants for Zone 12B

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Growing Marjoram in USDA Zone 12B

Marjoram (Origanum majorana) grows well in USDA Hardiness Zone 12B. This zone includes cities like Captain Cook, Eleele, Ewa Beach and 50 more.

The average last frost date for Zone 12B is around Friday, January 1, 2027. For best results, start your Marjoram seeds indoors around Friday, November 6, 2026, then transplant outdoors around Friday, January 15, 2027.

Expect to harvest your Marjoram approximately 60 days after planting.