North America Non-native Plant

Tuart

Botanical name: Eucalyptus gomphocephala

USDA symbol: EUGO

Life cycle: perennial

Habit: tree

Native status: Non-native, reproduces and persists in the wild in Hawaii  

Tuart Tree: A Majestic Australian Native for Large Landscapes If you’re dreaming of a stately shade tree that can handle coastal conditions and bring a touch of Australian elegance to your property, the tuart tree (Eucalyptus gomphocephala) might catch your eye. This impressive eucalyptus species has found a home in ...

Tuart Tree: A Majestic Australian Native for Large Landscapes

If you’re dreaming of a stately shade tree that can handle coastal conditions and bring a touch of Australian elegance to your property, the tuart tree (Eucalyptus gomphocephala) might catch your eye. This impressive eucalyptus species has found a home in Hawaii, though it originally hails from the sunny shores of southwestern Western Australia.

What Makes the Tuart Special?

The tuart is a real showstopper when it comes to size and presence. This perennial tree typically grows as a single-trunked giant, reaching heights well over 13-16 feet – and that’s just getting started! What really sets it apart is its gorgeous bark that peels away in patches, revealing a smooth, pale surface underneath that’s quite the conversation starter.

The tree’s narrow, blue-green leaves create a dense canopy that provides excellent shade, while its cream-colored flowers add a subtle beauty and attract bees and other pollinators to your garden.

Where You’ll Find Tuart Trees

While tuart trees are native to the coastal regions around Perth, Australia, they’ve established themselves in Hawaii as a non-native species. In Hawaii, these trees have proven they can reproduce and persist on their own without human intervention.

Is the Tuart Right for Your Garden?

Here’s the thing about tuart trees – they’re not for everyone, and that’s perfectly okay! These trees are best suited for:

  • Large residential properties with plenty of space
  • Coastal landscapes where salt tolerance is important
  • Mediterranean-style gardens
  • Parks and public spaces
  • Properties needing substantial windbreaks

If you’re working with a smaller space or prefer supporting native ecosystems, you might want to consider native Hawaiian alternatives that provide similar benefits while supporting local wildlife.

Growing Conditions and Care

Tuart trees are surprisingly low-maintenance once you understand their needs. They thrive in USDA hardiness zones 9-11, making them well-suited to Hawaii’s climate.

Sunlight: These trees are sun worshippers – give them full sun for best results.

Soil: Well-draining soil is crucial. They’re not fussy about soil type, but they absolutely hate waterlogged conditions.

Water: Once established, tuart trees are remarkably drought tolerant. Young trees need deep, regular watering to get their root systems established, but mature trees can handle dry spells like champs.

Salt tolerance: One of their superpowers is handling salty, coastal conditions that would stress many other trees.

Planting and Care Tips

If you decide to plant a tuart tree, here are some essential tips for success:

  • Give it space – lots of space! These trees need room to spread both above and below ground
  • Water deeply but infrequently once established
  • Minimal pruning required, but be aware that mature trees can occasionally drop branches
  • Plant in spring or fall for best establishment
  • Mulch around the base to retain moisture and suppress weeds

Wildlife and Pollinator Benefits

The tuart’s cream-colored flowers are a hit with bees and other pollinators, providing nectar when in bloom. However, since this is a non-native species in Hawaii, it won’t support the full range of local wildlife that native trees would.

The Bottom Line

The tuart tree is an impressive specimen that can add grandeur to large landscapes, especially in coastal areas. While it’s not native to Hawaii, it has proven adaptable to local conditions. If you have the space and appreciate its unique characteristics, it can be a striking addition to your property. However, if supporting native ecosystems is a priority, consider exploring native Hawaiian tree alternatives that can provide similar benefits while better supporting local wildlife and maintaining the natural character of the islands.

Remember, any tree is a long-term commitment, so take time to research and choose the species that best fits your space, goals, and environmental values.

Tuart

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

Eucalyptus L'Hér. - gum

Species

Eucalyptus gomphocephala DC. - tuart

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