North America Non-native Plant

Calamagrostis Viridiflavescens Var. Montevidensis

Botanical name: Calamagrostis viridiflavescens var. montevidensis

USDA symbol: CAVIM2

Habit: grass

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

Synonyms: Calamagrostis montevidensis Nees (CAMO29)   

Calamagrostis viridiflavescens var. montevidensis: The Mysterious Montevideo Grass Ever stumbled across a plant name that sounds like it belongs in a botanical treasure hunt? Meet Calamagrostis viridiflavescens var. montevidensis – a grass variety that’s as elusive as its name is long. While this member of the reed grass family might ...

Calamagrostis viridiflavescens var. montevidensis: The Mysterious Montevideo Grass

Ever stumbled across a plant name that sounds like it belongs in a botanical treasure hunt? Meet Calamagrostis viridiflavescens var. montevidensis – a grass variety that’s as elusive as its name is long. While this member of the reed grass family might not be the most well-documented plant in your gardening journey, it certainly has an intriguing story to tell.

What Exactly Is This Grass?

Calamagrostis viridiflavescens var. montevidensis belongs to the graminoid family, which is just a fancy way of saying it’s a true grass. You might also see it listed under its synonym, Calamagrostis montevidensis Nees, in some botanical references. The montevidensis part of its name gives us a clue – it likely has connections to the Montevideo region of South America.

The Challenge of Growing an Enigma

Here’s where things get interesting (and a bit frustrating): this particular grass variety is something of a mystery in the gardening world. While we know it’s part of the well-regarded Calamagrostis genus, specific information about its native range, growing requirements, and garden performance is surprisingly scarce.

Geographic Distribution

The geographic distribution of this variety remains largely undocumented in readily available sources, though the name suggests South American origins.

Should You Grow It?

Given the limited information available about this grass variety, it presents both opportunities and challenges for gardeners:

  • Limited cultivation guidance makes it a risky choice for beginners
  • Unknown native status means we can’t be sure of its ecological impact
  • Scarce availability in nurseries and seed catalogs
  • Potential conservation value if it proves to be rare

Better-Documented Alternatives

If you’re drawn to ornamental grasses from the Calamagrostis family, consider these well-documented options instead:

  • Calamagrostis x acutiflora ‘Karl Foerster’ (Feather Reed Grass)
  • Calamagrostis brachytricha (Korean Feather Reed Grass)
  • Native grass species appropriate to your specific region

The Bottom Line

While Calamagrostis viridiflavescens var. montevidensis might intrigue botanical enthusiasts and collectors, the lack of cultivation information makes it challenging to recommend for typical garden use. If you’re passionate about ornamental grasses, you’ll likely find more success with better-documented varieties that offer proven garden performance and clear growing guidelines.

Sometimes the most responsible gardening choice is to admire a plant’s botanical uniqueness while choosing more suitable alternatives for your landscape. Your garden – and your sanity – will thank you for it!

Calamagrostis Viridiflavescens Var. Montevidensis

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 viridiflavescens (Poir.) Steud.

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