North America Non-native Plant

Erigeron Polymorphus

Botanical name: Erigeron polymorphus

USDA symbol: ERPO12

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

Erigeron polymorphus: The Mysterious Fleabane If you’ve stumbled upon the name Erigeron polymorphus in your plant research, you might be scratching your head wondering what exactly this mysterious member of the fleabane family is all about. Well, you’re not alone! This particular species is something of an enigma in the ...

Erigeron polymorphus: The Mysterious Fleabane

If you’ve stumbled upon the name Erigeron polymorphus in your plant research, you might be scratching your head wondering what exactly this mysterious member of the fleabane family is all about. Well, you’re not alone! This particular species is something of an enigma in the gardening world.

What We Know (And Don’t Know)

Erigeron polymorphus belongs to the vast Erigeron genus, commonly known as fleabanes, which are part of the sunflower family. These plants are typically known for their daisy-like flowers and ability to attract pollinators. However, when it comes to this specific species, reliable information is surprisingly scarce.

The lack of readily available information about Erigeron polymorphus could mean several things:

  • It may be an extremely rare or localized species
  • The name might be outdated or synonymous with another currently recognized species
  • It could be a regional variant that hasn’t been widely studied or cultivated

The Challenge for Gardeners

Without clear information about its native range, growing requirements, or potential invasiveness, recommending whether to plant Erigeron polymorphus becomes tricky. We don’t know if it’s a well-behaved garden citizen or a potential troublemaker.

A Safer Alternative Approach

If you’re interested in growing fleabanes in your garden, consider these better-documented alternatives from the Erigeron genus:

  • Erigeron speciosus (Showy Fleabane) – native to western North America
  • Erigeron annuus (Annual Fleabane) – widespread native annual
  • Erigeron karvinskianus (Mexican Fleabane) – popular ornamental species

What to Do If You Encounter This Plant

If you come across a plant labeled as Erigeron polymorphus, proceed with caution:

  • Verify the identification with local botanical experts or extension services
  • Research whether it’s considered native to your specific region
  • Check with local authorities about any restrictions or concerns
  • Consider choosing a well-documented native alternative instead

The Bottom Line

While the mystery of Erigeron polymorphus might intrigue plant enthusiasts, the lack of solid information makes it difficult to recommend for home gardens. When in doubt, it’s always wise to choose well-documented native plants that you know will benefit your local ecosystem without causing unintended consequences.

Sometimes the most responsible gardening choice is admitting when we don’t have enough information to make a good recommendation. In this case, exploring other members of the Erigeron family might satisfy your curiosity while keeping your garden on solid ground!

Erigeron Polymorphus

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Erigeron L. - fleabane

Species

Erigeron polymorphus Scop.

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