North America Non-native Plant

Triticale

Botanical name: Triticosecale rimpaui

USDA symbol: TRRI

Life cycle: annual

Habit: grass

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

Synonyms: Triticosecale rimpaui Wittm., nom. inval. (TRRI8)   

Triticale: When Plant Names Get Mysterious If you’ve stumbled across the name Triticosecale rimpaui in your gardening research, you’re not alone in scratching your head. This particular plant name presents quite the botanical puzzle that’s worth exploring before you consider adding it to your garden. What We Know (And What ...

Triticale: When Plant Names Get Mysterious

If you’ve stumbled across the name Triticosecale rimpaui in your gardening research, you’re not alone in scratching your head. This particular plant name presents quite the botanical puzzle that’s worth exploring before you consider adding it to your garden.

What We Know (And What We Don’t)

Triticosecale rimpaui is listed as an annual graminoid—essentially a member of the grass family or grass-like plants. The genus Triticosecale typically refers to triticale, which is a human-created hybrid between wheat and rye. However, here’s where things get interesting (and a bit confusing): rimpaui as a species name doesn’t appear in standard botanical references or databases.

The common name associated with this plant is simply triticale, but without clear identification, we’re left with more questions than answers about this specific plant’s characteristics and origin.

The Geographic Mystery

Unfortunately, the geographic distribution of Triticosecale rimpaui is unknown, making it impossible to determine where this plant naturally occurs or has been cultivated. This lack of distribution data also means we can’t pinpoint its native status or provide region-specific growing advice.

Should You Plant It?

Here’s where we need to pump the brakes a bit. Without reliable information about this plant’s:

  • True identity and characteristics
  • Growing requirements
  • Potential invasive tendencies
  • Native status
  • Environmental impact

It’s difficult to recommend planting Triticosecale rimpaui with confidence. When plant identification is uncertain, it’s always better to err on the side of caution.

Better Alternatives for Your Garden

If you’re interested in native grasses or grain-like plants for your landscape, consider these well-documented alternatives:

  • Native bunch grasses appropriate for your region
  • Wild rice (in suitable wetland areas)
  • Little bluestem or other native prairie grasses
  • Established triticale cultivars if you’re interested in edible grains

The Bottom Line

Sometimes in the plant world, we encounter names that don’t have clear documentation or widespread recognition. Triticosecale rimpaui appears to be one of those cases. Rather than risk introducing a poorly understood plant to your garden, focus on well-documented native species that will provide known benefits to your local ecosystem.

If you have specific information about this plant or have encountered it in cultivation, consider reaching out to local botanical experts or extension offices who might help clarify its identity and appropriate use in gardens.

Remember: the best garden plants are those we understand well—their needs, their behaviors, and their place in the local ecosystem. When in doubt, choose the known over the mysterious!

Triticale

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

×Triticosecale Wittm. ex A. Camus [Secale × Triticum] - triticale

Species

Triticosecale rimpaui C. Yen & J.L. Yang [Secale cereale × Triticum aestivum] - triticale

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