Royal Poinciana

Royal Poinciana Royal Poinciana Royal Poinciana
Shade Trees
Hawaii
121 cities
Royal Poinciana (Delonix regia) is one of the most visually striking trees you can plant in Hawaii. You'll recognize it by the wide umbrella-shaped canopy, feathery compound leaves, and the near-total cover of scarlet-orange blooms it puts on each summer. It grows wider than it grows tall, which makes it a dominant presence in any yard or streetscape.
Lifespan

50 to 150 years with adequate space and no major storm damage

Mature Size

30 to 40 feet tall, with a canopy spread of 40 to 70 feet. The spread routinely exceeds the height, which is the defining characteristic of this tree's silhouette.

Care & Maintenance

Once established, this tree wants full sun and very little from you. It's drought-tolerant and grows in a range of soils as long as drainage is good. Most people get this wrong: fertilizing a Royal Poinciana, especially with nitrogen, often gives you lush foliage at the expense of flowers. If yours isn't blooming well, back off the fertilizer before assuming something is wrong.

Common Issues & Threats

Pruning Guide

Prune after the main bloom cycle winds down, typically late summer. Focus on removing dead or crossing branches and any limbs growing back toward the center of the canopy. Never top this tree. Topping destroys the umbrella form it takes years to build and triggers dense, weakly attached regrowth that's far more likely to fail in a storm than the original structure.

Did You Know?

The seed pods this tree drops are woody, dark brown, and can reach two feet long. They're heavy enough to dent a car roof and accumulate fast, so factor in cleanup if you're parking underneath one. Also worth knowing: Royal Poinciana is native to Madagascar, not Hawaii or anywhere in the Pacific. It was introduced and naturalized, which is part of why it thrives so aggressively here.

Where Royal Poinciana Is Found

Royal Poinciana is common in 121 of the US communities we cover, across 1 climate regions.

Hardiness Zones 1
East Honolulu, HI Zone 12b Hilo, HI Zone 11a Pearl City, HI Zone 12a Kailua CDP (Honolulu County), HI Zone 12b Waipahu, HI Zone 12b Kaneohe, HI Zone 12b Mililani Town, HI Zone 12a Kahului, HI Zone 12b Ewa Gentry, HI Zone 12b Kapolei, HI Zone 12b Kihei, HI Zone 12b Mililani Mauka, HI Zone 12a

... and 109 more cities

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