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Royal Poinciana (Delonix regia) growing in South Florida
Grade Florida

Royal Poinciana — South Florida Plant Guide

Delonix regia

Family: Fabaceae · Tree

Landscape Uses

specimenshade tree

Style Tags

tropicalflowering

South Florida Growing Guide

Light Requirements

Full Sun

Water Requirements

Low3/10

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

High drought tolerance once established — one of the more forgiving large shade trees for irrigation-restricted South Florida landscapes. Requires well-drained soil; does not tolerate standing water.

Soil and Fertilization

sandyloamclay

Fertilizer: Balanced slow-release tree fertilizer

Schedule: Light balanced fertilizer in spring if growth is poor; established trees in good soil rarely need supplemental feeding.

Salt Tolerance

Low (2/10) — plant away from salt air exposure
Mature Height
3040 ft
Mature Width
4060 ft
Growth Rate
fast
Water Demand
3/10
Florida Grade
Florida
Installed Cost
$$
USDA Zones
10b, 11
FLEPPC Status
None
Iguana Rating
5/10

Where to Buy in South Florida

Find Royal Poinciana at South Florida nurseries — check availability and pricing at nurseries near you.

Frequently Asked Questions

How fast does Royal Poinciana grow in South Florida?

Royal Poinciana has a fast growth rate. In South Florida's warm, humid climate it typically establishes quickly with proper watering and fertilization.

Is Royal Poinciana safe for pets?

Yes, Royal Poinciana is considered pet-safe.

How much water does Royal Poinciana need in South Florida?

Low water needs (3/10). Once established (12–18 months), Royal Poinciana is drought-tolerant and requires minimal supplemental irrigation in South Florida.

Can Royal Poinciana tolerate salt air in South Florida?

Royal Poinciana has low salt tolerance (2/10) and is not recommended near areas with significant salt air exposure.

Is Royal Poinciana available in Miami-Dade County?

In Miami-Dade County, Royal Poinciana is classified as: allowed. Common specimen and shade tree.

County Availability in South Florida

Miami-Dade County

Allowed

Common specimen and shade tree. Plant at least 10ft from sidewalks, driveways, and structures due to surface root spread.

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

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Broward County

Allowed

Common. Same root-clearance and pruning-structure guidance applies.

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

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Palm Beach County

Allowed

Common in central and coastal Palm Beach County..

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

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Collier County

Allowed

Moderately common; less dominant than in Miami-Dade/Broward..

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

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Monroe County

Allowed

Common in the Keys; some naturalization documented. Low salt tolerance limits use in the most exposed coastal 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.

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Ask about Royal Poinciana

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