North America Non-native Plant

Corymbia

Botanical name: Corymbia

USDA symbol: CORYM3

Life cycle: perennial

Habit: tree

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Corymbia Trees: Australian Beauties for Warm Climate Gardens If you’ve been searching for a striking tree that can handle heat and drought while delivering spectacular blooms, you might want to get acquainted with corymbia trees. These Australian natives have found their way into gardens across warmer parts of the United ...

Corymbia Trees: Australian Beauties for Warm Climate Gardens

If you’ve been searching for a striking tree that can handle heat and drought while delivering spectacular blooms, you might want to get acquainted with corymbia trees. These Australian natives have found their way into gardens across warmer parts of the United States, bringing their unique charm and resilience to landscapes from California to Hawaii.

What Exactly is a Corymbia?

Corymbia trees are perennial, woody plants that typically grow as single-stemmed trees reaching heights greater than 13-16 feet, though some may develop multiple stems or stay shorter under certain environmental conditions. Originally from Australia, these trees have established themselves as non-native species that reproduce naturally in Hawaii, the lower 48 states, the Pacific Basin, and Puerto Rico.

Where You’ll Find Corymbia Growing

In the United States, corymbia trees have made themselves at home in California, Hawaii, Puerto Rico, and the U.S. Minor Outlying Islands. They’ve adapted well to these warm climates and can reproduce without human intervention.

The Appeal of Corymbia Trees

What draws gardeners to corymbia trees? These beauties offer several attractive features:

  • Stunning flowers that typically bloom in clusters of white, pink, or red
  • Interesting bark patterns that add year-round visual interest
  • Evergreen foliage that provides consistent greenery
  • Excellent drought tolerance once established
  • Ability to attract bees and other beneficial pollinators

Garden Role and Landscape Uses

Corymbia trees work wonderfully as specimen plants, providing focal points in large gardens and landscapes. They’re also valuable as shade trees and can serve as effective windbreaks. These trees are particularly well-suited for Mediterranean-style gardens, drought-tolerant landscapes, and properties with plenty of space to accommodate their mature size.

Growing Conditions and Care

If you’re considering adding a corymbia to your landscape, here’s what these trees prefer:

  • Sunlight: Full sun exposure for best growth and flowering
  • Soil: Well-draining soil is essential; they don’t tolerate waterlogged conditions
  • Water: Drought-tolerant once established, requiring minimal supplemental watering
  • Climate: Best suited for USDA hardiness zones 9-11
  • Space: Give them plenty of room to reach their mature size

Planting and Care Tips

When planting corymbia trees, timing and placement are key. Choose a location with full sun and ensure the soil drains well. Young trees will need regular watering until their root systems establish, but mature trees are remarkably drought-tolerant. Pruning should be done carefully and minimally, as these trees generally maintain good natural form.

A Word About Native Alternatives

While corymbia trees can be beautiful additions to appropriate landscapes, it’s worth considering native alternatives that provide similar benefits while supporting local ecosystems. Depending on your region, native trees like live oaks, madrones, or native cherry species might offer comparable aesthetic appeal with greater ecological benefits for local wildlife.

Should You Plant Corymbia?

Corymbia trees can be excellent choices for gardeners in warm climates who want drought-tolerant, flowering trees with unique character. They’re particularly suitable if you have a large property, enjoy Mediterranean-style landscaping, or want to attract pollinators. However, since they’re non-native, consider exploring native tree options first to support your local ecosystem. If you do choose corymbia, you’ll be rewarded with a resilient, beautiful tree that can thrive with minimal care once established.

Corymbia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Myrtaceae Juss. - Myrtle family

Genus

Corymbia K.D. Hill & L.A.S. Johnson - corymbia

Species

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA