North America Non-native Plant

Eucalyptus Plenissima

Botanical name: Eucalyptus plenissima

USDA symbol: EUPL8

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

Eucalyptus plenissima: The Mysterious Eucalyptus That’s Hard to Find If you’ve stumbled across the name Eucalyptus plenissima in your gardening research, you might be scratching your head—and for good reason! This particular eucalyptus species is something of an enigma in the gardening world, with very limited information available about its ...

Eucalyptus plenissima: The Mysterious Eucalyptus That’s Hard to Find

If you’ve stumbled across the name Eucalyptus plenissima in your gardening research, you might be scratching your head—and for good reason! This particular eucalyptus species is something of an enigma in the gardening world, with very limited information available about its characteristics and cultivation requirements.

What We Know (And Don’t Know) About This Plant

Eucalyptus plenissima belongs to the vast eucalyptus family, which means it’s native to Australia like its many cousins. However, unlike popular eucalyptus species such as the Rainbow Eucalyptus or Silver Dollar Eucalyptus, this particular species doesn’t appear in most standard horticultural references or nursery catalogs.

Unfortunately, we don’t have reliable information about:

  • Its common name (if it has one)
  • Specific native range within Australia
  • Growth habits and mature size
  • USDA hardiness zones
  • Specific care requirements
  • Wildlife and pollinator benefits

Should You Try to Grow It?

Here’s where things get tricky. Because so little reliable information exists about Eucalyptus plenissima, it’s difficult to recommend it for home gardeners. This lack of information could indicate several possibilities:

  • It might be an extremely rare species
  • It could be a species that’s not commonly cultivated
  • The name might be outdated or incorrect
  • It may not be readily available in the nursery trade

Better Alternatives to Consider

If you’re drawn to eucalyptus trees for your garden, consider these well-documented and readily available alternatives:

  • Eucalyptus gunnii (Cider Gum) – Hardy and compact
  • Eucalyptus pauciflora (Snow Gum) – Cold-tolerant with attractive bark
  • Eucalyptus cinerea (Silver Dollar Tree) – Popular for its round, silvery leaves
  • Eucalyptus deglupta (Rainbow Eucalyptus) – Stunning multicolored bark

If You’re Determined to Find It

Should you decide to pursue Eucalyptus plenissima despite the limited information, here are some steps you could take:

  • Contact specialized Australian native plant societies
  • Reach out to botanical gardens with eucalyptus collections
  • Consult with academic institutions studying Australian flora
  • Verify the correct botanical name with plant taxonomists

General Eucalyptus Growing Tips

If you do manage to source this mysterious eucalyptus, most species in the genus share some common requirements:

  • Full sun exposure
  • Well-draining soil
  • Regular water when young, drought-tolerant when established
  • Protection from harsh winds in colder climates
  • Space to accommodate potentially large mature size

The Bottom Line

While Eucalyptus plenissima might sound intriguing, the lack of available information makes it a risky choice for most gardeners. Unless you’re a collector of rare plants or have a specific research interest, you’ll likely have much better success with one of the many well-documented eucalyptus species that are readily available and proven in cultivation.

Sometimes in gardening, mystery isn’t always a good thing—especially when you’re trying to create a thriving landscape! Stick with the eucalyptus species that have proven track records, and you’ll be much more likely to enjoy success in your garden.

Eucalyptus Plenissima

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 plenissima (C.A. Gardner) Brooker

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