FloridaLandscapeIQ
African Iris (Dietes bicolor) growing in South Florida
Grade Florida #1

African Iris — South Florida Plant Guide

Dietes bicolor

Family: Iridaceae · Groundcover

Legal status pending editorial verification. Confirm with your county before installation.

Landscape Uses

bordergroundcovermass plantingrock gardenxeriscape

Style Tags

contemporarynaturalisticflorida friendlydrought tolerantlow maintenance

South Florida Growing Guide

Light Requirements

Full SunPartial SunPartial Shade

Water Requirements

Low2/10

Once established (12–18 months), African Iris is drought-tolerant and requires minimal supplemental irrigation in South Florida.

Very low water once established. Water 1x per week dry season — very drought tolerant. Rainy season needs no supplemental irrigation.

Soil and Fertilization

sandylimestoneloamwell drained

Fertilizer: Light balanced granular or slow-release.

Schedule: February and September with light balanced granular. Low fertilizer requirements.

Salt Tolerance

Moderate (5/10) — some protection from direct spray recommended
Mature Height
23 ft
Mature Width
23 ft
Growth Rate
moderate
Water Demand
2/10
Florida Grade
Florida #1
Installed Cost
$
USDA Zones
8b, 9a, 9b, 10a, 10b, 11
FLEPPC Status
None
Iguana Rating
7/10

Where to Buy in South Florida

Find African Iris at South Florida nurseries — check availability and pricing at nurseries near you.

Frequently Asked Questions

How fast does African Iris grow in South Florida?

African Iris has a moderate growth rate. In South Florida's warm, humid climate it typically establishes quickly with proper watering and fertilization.

Is African Iris safe for pets?

Yes, African Iris is considered pet-safe. Considered low toxicity to pets in landscape use.

How much water does African Iris need in South Florida?

Low water needs (2/10). Once established (12–18 months), African Iris is drought-tolerant and requires minimal supplemental irrigation in South Florida.

Can African Iris tolerate salt air in South Florida?

African Iris has moderate salt tolerance (5/10). It can handle some coastal exposure but should be protected from direct ocean spray.

Is African Iris available in Miami-Dade County?

In Miami-Dade County, African Iris is classified as: allowed. Allowed.

County Availability in South Florida

Miami-Dade County

Allowed

Allowed. Non-restricted.

✓ Coastal OK

USDA Zone 10a–11. Tropical climate, year-round warmth and humidity.

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Broward County

Allowed

Allowed. Commonly used in Broward xeriscape landscape programs.

✓ Coastal OK

USDA Zone 10a–10b. Subtropical with warm winters and wet/dry seasons.

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Palm Beach County

Allowed

Allowed. Outstanding cold hardiness throughout Palm Beach County.

✓ Coastal OK

USDA Zone 9b–10b. Transitional zone with occasional winter cold in north.

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Collier County

Allowed

Allowed. Excellent in Naples area drought-tolerant landscapes.

✓ Coastal OK

USDA Zone 10a–10b. Subtropical Gulf Coast with seasonal flooding.

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Monroe County

Allowed

Allowed. Moderate salt tolerance for protected Keys sites.

USDA Zone 11. Tropical maritime, highest salt exposure of all 5 counties.

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Full ordinance references and permit requirements available to Professional subscribers. Always verify current county requirements before installation.

Need a Spec Sheet?

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Ask about African Iris

Get answers grounded in UF/IFAS research and South Florida landscape data.