North America Non-native Plant

Silvergrass

Botanical name: Miscanthus transmorrisonensis

USDA symbol: MITR9

Habit: grass

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

Silvergrass (Miscanthus transmorrisonensis): The Mystery Grass That’s Hard to Pin Down If you’ve stumbled across the name Miscanthus transmorrisonensis in your plant research, you might be scratching your head—and for good reason! This particular silvergrass is one of those botanical mysteries that keeps even experienced gardeners guessing. What We Know ...

Silvergrass (Miscanthus transmorrisonensis): The Mystery Grass That’s Hard to Pin Down

If you’ve stumbled across the name Miscanthus transmorrisonensis in your plant research, you might be scratching your head—and for good reason! This particular silvergrass is one of those botanical mysteries that keeps even experienced gardeners guessing.

What We Know (And Don’t Know)

Miscanthus transmorrisonensis belongs to the grass family (Poaceae) and goes by the common name silvergrass. However, that’s about where the clear information ends. This species appears to have very limited documentation in horticultural literature, making it challenging to provide specific growing advice or even confirm its exact characteristics.

The geographical distribution of this particular Miscanthus species is unclear, and we don’t have reliable information about its native range or current cultivation status.

The Challenge with Obscure Plant Species

Sometimes in the plant world, we encounter species names that exist in databases but lack the detailed growing information that gardeners need. This could happen for several reasons:

  • The species might be extremely rare or have a very limited natural range
  • It could be a recently described species with little cultivation history
  • There might be taxonomic uncertainty or confusion with other Miscanthus species
  • It may not be readily available in the nursery trade

Better-Known Silvergrass Alternatives

If you’re drawn to the idea of growing a silvergrass, consider these well-documented Miscanthus species instead:

  • Miscanthus sinensis – Chinese silvergrass with many cultivars available
  • Miscanthus sacchariflorus – Amur silvergrass, great for larger spaces
  • Miscanthus oligostachyus – A smaller species perfect for compact gardens

These alternatives offer the graceful, arching foliage and feathery plumes that make silvergrasses so appealing, plus they come with plenty of growing guidance and proven garden performance.

What to Do If You Encounter This Species

If you come across Miscanthus transmorrisonensis for sale or mentioned in plant lists, proceed with caution. Without clear information about its growth habits, hardiness, or potential invasiveness, it’s difficult to make informed planting decisions.

Your best bet is to:

  • Contact local botanical gardens or extension services for guidance
  • Verify the plant identification with multiple reliable sources
  • Consider whether a better-documented alternative might serve your garden goals
  • If you do decide to grow it, start small and monitor its behavior carefully

The Bottom Line

While the mystery surrounding Miscanthus transmorrisonensis might intrigue plant collectors, most gardeners will find greater success with well-established silvergrass species that come with proven growing instructions and predictable garden behavior. Sometimes the most exciting plants are the ones we can actually grow successfully!

Remember, there’s no shame in choosing plants with clear growing guides over botanical enigmas. Your garden—and your sanity—will thank you for it.

Silvergrass

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

Miscanthus Andersson - silvergrass

Species

Miscanthus transmorrisonensis Hayata - silvergrass

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