Non-native Plants

Large-leaf Yellow Teatree

Leptospermum morrisonii

USDA symbol: LEMO20

perennial shrub

Hawaii: non-native, naturalized

If you’re looking for a low-maintenance flowering shrub that can handle Hawaii’s varied growing conditions, the large-leaf yellow teatree (Leptospermum morrisonii) might just be the plant you’ve been searching for. This Australian native has found a comfortable home in the Hawaiian islands, where it’s proven to be a reliable performer ...

Large-Leaf Yellow Teatree: A Hardy Australian Shrub for Hawaiian Gardens

If you’re looking for a low-maintenance flowering shrub that can handle Hawaii’s varied growing conditions, the large-leaf yellow teatree (Leptospermum morrisonii) might just be the plant you’ve been searching for. This Australian native has found a comfortable home in the Hawaiian islands, where it’s proven to be a reliable performer in gardens across the state.

Getting to Know the Large-Leaf Yellow Teatree

The large-leaf yellow teatree is a perennial woody shrub that typically grows as a multi-stemmed plant reaching heights of 13 to 16 feet, though it can sometimes grow taller or develop a single trunk depending on its environment. Despite its common name suggesting yellow flowers, this teatree actually produces charming small white or pink blooms that appear along its branches, creating a delightful display when in flower.

What makes this plant particularly appealing is its attractive narrow, leathery leaves and interesting bark that may peel in strips, adding textural interest to your landscape year-round.

Where You’ll Find It Growing

Originally hailing from Australia’s coastal regions, the large-leaf yellow teatree has established itself throughout Hawaii, where it reproduces naturally without human intervention. It’s become quite at home in the islands’ diverse microclimates.

  • Species observed
  • No observations

Why Consider This Shrub for Your Garden?

The large-leaf yellow teatree offers several benefits that make it worth considering:

  • Versatile growing conditions: This adaptable plant can thrive in both wetland and non-wetland areas, making it suitable for various spots in your landscape
  • Pollinator friendly: The small flowers attract bees and other beneficial pollinators to your garden
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Erosion control: Its root system makes it excellent for slopes and areas prone to erosion
  • Hedge potential: Can be pruned and shaped to create attractive hedges or screens

A Note About Native Alternatives

While the large-leaf yellow teatree isn’t invasive and can be grown responsibly, consider exploring native Hawaiian shrubs that might serve similar purposes in your landscape. Native plants often provide better support for local wildlife and are naturally adapted to Hawaiian growing conditions.

Growing Your Large-Leaf Yellow Teatree Successfully

This Australian transplant is surprisingly easy to grow in USDA hardiness zones 9-11, which covers most of Hawaii’s growing regions.

Ideal Growing Conditions

  • Light: Full sun to partial shade – it’s quite flexible
  • Soil: Well-draining soil is essential; it won’t tolerate waterlogged conditions
  • Water: Moderate water needs, becoming quite drought tolerant once established
  • Climate: Thrives in coastal and Mediterranean-style gardens

Planting and Care Tips

Getting your large-leaf yellow teatree off to a good start is straightforward:

  • Plant in a location with good drainage – this is non-negotiable
  • Water regularly during the first growing season to help establish a strong root system
  • Once established (usually after the first year), reduce watering frequency
  • Prune after flowering to maintain desired shape and size
  • Apply a light mulch around the base to retain moisture and suppress weeds

Perfect Garden Settings

The large-leaf yellow teatree shines in:

  • Mediterranean-style gardens with other drought-tolerant plants
  • Coastal landscapes where salt tolerance is beneficial
  • Low-maintenance gardens for busy homeowners
  • Slope stabilization projects
  • Mixed shrub borders for year-round interest

The Bottom Line

The large-leaf yellow teatree is a solid choice for Hawaiian gardeners seeking a reliable, attractive shrub that won’t demand constant attention. While it’s not native to the islands, it has proven itself to be a well-behaved addition to local landscapes. Just remember to consider native alternatives first, and if you do choose this Australian beauty, you’ll be rewarded with years of lovely blooms and minimal maintenance requirements.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Hawaii ()

Facultative
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Myrtales
Family: Myrtaceae Juss. - Myrtle family
Genus: Leptospermum J.R. Forst. & G. Forst. - teatree

Species: Leptospermum morrisonii J. Thomp. - large-leaf yellow teatree

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