USDA Hardiness Zone 11B Growing Guide
Source: USDA Agricultural Research Service Plant Hardiness Zone Map 2023
Coastal Hawaii — warm year-round with no frost risk.
Where Zone 11B sits on the national map
Zone Position
Key Facts — Zone 11B
- Avg. coldest night: 45°F to 50°F (7.2°C to 10°C) — the band of average annual extreme minimum temperatures that defines this zone (USDA ARS PHZM 2023)
- What that means: in an average year your coldest night lands somewhere in that 5°F window. Actual lows can drop colder in extreme winters; daytime highs are not bounded by this number.
- Found In: 2 US states, including Florida, Hawaii
- Growing Considerations: Coastal Hawaii — warm year-round with no frost risk.
What Is Zone 11B?
USDA Hardiness Zone 11B is defined by an average annual extreme minimum temperature between 45°F and 50°F (7.2°C to 10°C), according to the USDA ARS Plant Hardiness Zone Map 2023.
Coldest avg. low
45°F
USDA PHZM 2023
Warmest avg. low
50°F
USDA PHZM 2023
Coldest avg. low (°C)
7.2°C
USDA PHZM 2023
States
2
Plants That Thrive in Zone 11B
Plants well-adapted to the temperature range of this zone.
Macadamia
Coffee
Pineapple
Plumeria
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Frequently Asked Questions
What plants grow in Zone 11B?
Coastal Hawaii — warm year-round with no frost risk. Common plants that thrive include Macadamia, Coffee, Pineapple, Plumeria. Actual suitability depends on your parcel's soil, drainage, and microclimate.
What states have Zone 11B?
Zone 11B appears across 2 US states: Florida, Hawaii.
What temperature is USDA Zone 11B?
USDA Hardiness Zone 11B is defined by an average annual extreme minimum temperature between 45°F and 50°F (7.2°C to 10°C), per the USDA ARS Plant Hardiness Zone Map 2023.