North America Non-native Plant

Gray Gum

Botanical name: Eucalyptus punctata

USDA symbol: EUPU19

Native status: Not native but doesn't reproduce and persist in the wild

Gray Gum: A Stately Australian Native for Spacious Landscapes If you’re dreaming of a majestic tree that can handle tough conditions while adding year-round beauty to your landscape, the gray gum (Eucalyptus punctata) might just catch your eye. This Australian native brings a touch of the outback to gardens with ...

Gray Gum: A Stately Australian Native for Spacious Landscapes

If you’re dreaming of a majestic tree that can handle tough conditions while adding year-round beauty to your landscape, the gray gum (Eucalyptus punctata) might just catch your eye. This Australian native brings a touch of the outback to gardens with enough space to accommodate its impressive stature.

What Makes Gray Gum Special?

Gray gum earns its common name from its distinctive bark, which creates a stunning natural mosaic of gray and cream patches. As the outer bark sheds throughout the year, it reveals fresh, smooth surfaces underneath, giving the trunk an ever-changing, artistic appearance that’s truly eye-catching. The narrow, blue-green to gray-green leaves flutter gracefully in the breeze, adding movement and a silvery shimmer to your landscape.

Where Does It Come From?

This eucalyptus species hails from eastern Australia, where it thrives in the coastal and inland regions of New South Wales and Queensland. In its native habitat, gray gum grows naturally in woodlands and open forests, often forming part of the distinctive Australian bush landscape.

Is Gray Gum Right for Your Garden?

Before falling head-over-heels for this attractive tree, consider whether your space and goals align with what gray gum offers:

The Good Stuff

  • Drought tolerant once established – perfect for water-wise gardening
  • Fast-growing shade tree for large properties
  • Unique, attractive bark provides year-round visual interest
  • Flowers provide nectar for bees and other pollinators
  • Excellent for Mediterranean-style or drought-tolerant landscapes
  • Works well as a windbreak or specimen tree

The Reality Check

  • Needs lots of space – this isn’t a tree for small yards
  • Not native to North America, so it won’t support local wildlife ecosystems as well as native alternatives
  • May drop branches and bark, requiring cleanup
  • Limited to warmer climates (USDA zones 9-11)

Growing Gray Gum Successfully

Climate and Location

Gray gum thrives in USDA hardiness zones 9-11, making it suitable for areas with mild winters. Choose a location with full sun exposure and plenty of room for the tree to reach its mature size without crowding structures or other plants.

Soil and Water Needs

Like many eucalyptus species, gray gum prefers well-draining soil and can tolerate poor soil conditions once established. During the first few years, provide deep, infrequent watering to help establish a strong root system. Once mature, it becomes quite drought tolerant.

Planting and Care Tips

  • Plant in spring or fall when temperatures are moderate
  • Water deeply during establishment period (first 2-3 years)
  • Minimal pruning required – remove dead or damaged branches as needed
  • Mulch around the base to retain moisture and suppress weeds
  • Allow plenty of space for mature size

Consider Native Alternatives

While gray gum can be a striking addition to appropriate landscapes, consider exploring native shade trees that provide similar benefits while supporting local wildlife. Native oaks, maples, or other regionally appropriate species often offer comparable beauty with the added bonus of supporting local ecosystems.

The Bottom Line

Gray gum can be a wonderful choice for gardeners in warmer climates who have ample space and appreciate drought-tolerant trees with unique character. Its distinctive bark and hardy nature make it an interesting addition to Mediterranean-style gardens or large properties seeking a statement tree. Just make sure you have the space and climate to support this Australian beauty, and consider how it fits into your broader landscaping goals.

Gray Gum

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 punctata DC. - gray gum

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