North America Non-native Plant

Hypericum Roeperianum

Botanical name: Hypericum roeperianum

USDA symbol: HYRO8

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

Hypericum roeperianum: A Mysterious Member of the St. John’s Wort Family If you’ve stumbled upon the name Hypericum roeperianum in your plant research, you’re not alone in wondering what exactly this species is all about. Here’s the thing – this particular botanical name appears to be something of a mystery ...

Hypericum roeperianum: A Mysterious Member of the St. John’s Wort Family

If you’ve stumbled upon the name Hypericum roeperianum in your plant research, you’re not alone in wondering what exactly this species is all about. Here’s the thing – this particular botanical name appears to be something of a mystery in the gardening world.

The Challenge with Hypericum roeperianum

Despite belonging to the well-known Hypericum genus (commonly called St. John’s worts), Hypericum roeperianum doesn’t appear in major botanical databases or horticultural references. This could mean several things:

  • It might be an extremely rare or recently described species with limited documentation
  • The name could be a misspelling or misidentification of another Hypericum species
  • It may be a regional or vernacular name that hasn’t gained widespread recognition
  • It could be a synonym for a more commonly known species

What We Know About the Hypericum Family

While we can’t provide specific details about Hypericum roeperianum, we can tell you that the Hypericum genus is home to some fantastic garden plants. These dicot shrubs and perennials are known for their cheerful yellow flowers and often serve as excellent additions to native and naturalized gardens.

Better-Documented Alternatives

If you’re interested in growing plants from the Hypericum family, consider these well-established species instead:

  • Hypericum prolificum (Shrubby St. John’s Wort) – A native North American shrub
  • Hypericum punctatum (Spotted St. John’s Wort) – Another native option with distinctive dotted petals
  • Hypericum mutilum (Dwarf St. John’s Wort) – A smaller native species perfect for wet areas

Our Recommendation

Given the lack of reliable information about Hypericum roeperianum, we’d suggest focusing on the well-documented native Hypericum species instead. These plants offer proven garden performance, known growing requirements, and documented benefits to pollinators and wildlife.

If you have specific information about Hypericum roeperianum or have encountered it in a particular region, we’d love to hear from you! Sometimes local knowledge can help fill in the gaps where botanical databases fall short.

For now, though, you’ll have much better success – and much clearer growing instructions – with the tried-and-true members of the St. John’s wort family that have stood the test of time in gardens across the country.

Hypericum Roeperianum

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Theales

Family

Clusiaceae Lindl. - Mangosteen family

Genus

Hypericum L. - St. Johnswort

Species

Hypericum roeperianum G.W. Schimp. ex A. Rich.

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