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Quick Answer: ❌ No β€” Mustard greens prefer cool weather and will bolt quickly in zones with very short cool periods.
❌ No

Mustard Greens won't survive Zone 12b winters outdoors

Mustard greens prefer cool weather and will bolt quickly in zones with very short cool periods.

🌱 What Does Grow in Zone 12b?

These alternatives thrive in your conditions.

πŸ—ΊοΈ USDA Plant Hardiness Zones

Zone 12 is shown in this colour on the map below
2023 USDA Plant Hardiness Zone Map β€” zones 1 to 13

2023 USDA Plant Hardiness Zone Map β€” public domain. USDA Agricultural Research Service

USDA zones run 1a–13b (26 half-zones). Each full zone above covers both the a and b half-zones. Browse all US zones β†’

Technical climate details for Zone 12b
USDA Zone
12b
Last Frost
no frost
First Frost
no frost
Frost-Free Days
365
Mustard Greens Zone Range
4a – 10b
Days to Harvest
30–40 days

Frequently Asked Questions

Mustard greens prefer cool weather and will bolt quickly in zones with very short cool periods.
Zone 12b is in USDA Hardiness Zone 12b with approximately 365 frost-free days per year.
Mustard Greens grows in USDA Zones 4a–10b.
Mustard Greens is beginner-friendly and one of the easier crops to grow.