North America Non-native Plant

Calamagrostis Leonardii

Botanical name: Calamagrostis leonardii

USDA symbol: CALE56

Habit: grass

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

Calamagrostis leonardii: The Mystery Grass That’s Got Botanists Scratching Their Heads Ever stumbled across a plant name that seems to exist in the shadows of the botanical world? Meet Calamagrostis leonardii, a member of the reed grass genus that’s about as elusive as a unicorn in your backyard. This mysterious ...

Calamagrostis leonardii: The Mystery Grass That’s Got Botanists Scratching Their Heads

Ever stumbled across a plant name that seems to exist in the shadows of the botanical world? Meet Calamagrostis leonardii, a member of the reed grass genus that’s about as elusive as a unicorn in your backyard. This mysterious grass has botanists and native plant enthusiasts alike wondering what exactly they’re dealing with.

What Exactly Is Calamagrostis leonardii?

Calamagrostis leonardii belongs to the reed grass genus, which is part of the larger grass family (Poaceae). Like its better-known cousins in the Calamagrostis family, this species would theoretically be a grass or grass-like plant. The genus Calamagrostis includes some pretty spectacular ornamental and native grasses, known for their feathery seed heads and graceful movement in the wind.

But here’s where things get interesting (and a bit frustrating): despite its official botanical name, finding concrete information about Calamagrostis leonardii is like trying to find a needle in a haystack. This could mean several things – it might be an extremely rare species, a recently described plant, or perhaps a name that exists in taxonomic limbo.

The Challenge of Mysterious Native Plants

Sometimes in the world of native gardening, we encounter plants that sound intriguing but lack the detailed growing information we crave. Calamagrostis leonardii appears to be one of these botanical mysteries. Without clear documentation of its:

  • Native range and distribution
  • Growing requirements
  • Appearance and size
  • Ecological benefits
  • Availability in the nursery trade

It’s nearly impossible to recommend this plant for your garden with confidence.

What This Means for Your Garden

If you’ve come across Calamagrostis leonardii in your research and are hoping to add it to your landscape, you might want to pump the brakes. Without verified information about its growing habits, native status, or even its basic appearance, planting this species could be a shot in the dark.

Instead, consider these well-documented and readily available Calamagrostis alternatives that will give you that beautiful grass aesthetic you’re after:

  • Calamagrostis × acutiflora (Feather Reed Grass) – though not native, it’s non-invasive and stunning
  • Calamagrostis canadensis (Canada Reed Grass) – a true North American native
  • Other native grasses like Panicum virgatum (Switchgrass) or Schizachyrium scoparium (Little Bluestem)

The Bottom Line

While the mystery surrounding Calamagrostis leonardii is certainly intriguing, the lack of reliable information makes it a risky choice for home gardeners. Native plant gardening is wonderful, but it works best when we choose well-documented species that we know will thrive in our conditions and provide the ecological benefits we’re seeking.

If you’re determined to learn more about this elusive grass, consider reaching out to botanical institutions, native plant societies, or university extension services. They might have access to research or herbarium specimens that could shed more light on this mysterious member of the reed grass family.

Until then, stick with the tried-and-true native grasses that will give you guaranteed beauty, wildlife value, and growing success in your landscape!

Calamagrostis Leonardii

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

Calamagrostis Adans. - reedgrass

Species

Calamagrostis leonardii Chase [excluded]

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