North America Non-native Plant

Eucalyptus Cylindrocarpa

Botanical name: Eucalyptus cylindrocarpa

USDA symbol: EUCY5

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

Eucalyptus cylindrocarpa: The Mystery Eucalyptus That’s Hard to Pin Down If you’ve stumbled across the name Eucalyptus cylindrocarpa in your plant research, you’re not alone in scratching your head. This particular eucalyptus species is something of an enigma in the gardening world – mentioned in some botanical references but with ...

Eucalyptus cylindrocarpa: The Mystery Eucalyptus That’s Hard to Pin Down

If you’ve stumbled across the name Eucalyptus cylindrocarpa in your plant research, you’re not alone in scratching your head. This particular eucalyptus species is something of an enigma in the gardening world – mentioned in some botanical references but with surprisingly little concrete information available for home gardeners.

What We Know (And Don’t Know)

Here’s the honest truth: reliable, detailed information about Eucalyptus cylindrocarpa is scarce. While the botanical name suggests it’s part of the vast eucalyptus family – those iconic Australian trees known for their aromatic leaves and distinctive bark – specific details about this species remain elusive in most horticultural databases and gardening resources.

The name cylindrocarpa likely refers to the shape of its fruit (cylindrical), which is typical eucalyptus naming convention, but without more documented research, we can’t say much about its appearance, size, or growing habits with certainty.

The Challenge of Rare or Undocumented Species

When a plant species has limited documentation, it creates several challenges for gardeners:

  • Difficulty sourcing seeds or plants from reputable nurseries
  • Unknown growing requirements and care needs
  • Uncertain hardiness zones and climate preferences
  • Unclear mature size and garden behavior
  • Unknown wildlife and pollinator benefits

A Safer Eucalyptus Alternative

If you’re drawn to eucalyptus trees for your landscape, consider these well-documented and widely available options instead:

  • Eucalyptus gunnii (Cider Gum) – Hardy and compact, great for smaller gardens
  • Eucalyptus parvula (Small-leaved Gum) – Excellent for coastal areas
  • Eucalyptus nicholii (Narrow-leaved Peppermint) – Graceful weeping habit
  • Eucalyptus polyanthemos (Silver Dollar Tree) – Popular for cut foliage

Before You Plant Any Eucalyptus

Eucalyptus trees, regardless of species, have some important considerations:

  • They’re fast-growing and can become quite large
  • Most prefer well-draining soil and full sun
  • They can be drought-tolerant once established
  • Some species may not be cold-hardy in northern climates
  • Check local regulations – some areas restrict certain eucalyptus species

The Bottom Line

While Eucalyptus cylindrocarpa might sound intriguing, the lack of reliable growing information makes it a risky choice for most gardeners. Your time and garden space are better invested in well-documented eucalyptus species with known growing requirements and proven garden performance.

If you’re specifically interested in this species for research purposes, consider reaching out to botanical gardens, university extension programs, or Australian native plant societies who might have more specialized knowledge.

Remember, successful gardening often comes down to choosing the right plant for your specific conditions – and that’s much easier to do when you have solid information to work with!

Eucalyptus Cylindrocarpa

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 cylindrocarpa Blakely

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