North America Non-native Plant

Calamagrostis Pseudophragmites

Botanical name: Calamagrostis pseudophragmites

USDA symbol: CAPS10

Habit: grass

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

Calamagrostis pseudophragmites: An Elusive Grass Worth Investigating If you’ve stumbled upon the name Calamagrostis pseudophragmites in your plant research, you might be scratching your head wondering what exactly this mysterious grass is all about. You’re not alone! This particular botanical name represents one of those puzzling plant mysteries that even ...

Calamagrostis pseudophragmites: An Elusive Grass Worth Investigating

If you’ve stumbled upon the name Calamagrostis pseudophragmites in your plant research, you might be scratching your head wondering what exactly this mysterious grass is all about. You’re not alone! This particular botanical name represents one of those puzzling plant mysteries that even seasoned gardeners and botanists find challenging to pin down.

What We Know (And What We Don’t)

Calamagrostis pseudophragmites belongs to the reed grass genus Calamagrostis, which includes many beautiful ornamental and native grasses found around the world. The name suggests it’s somehow related to or resembles Phragmites (common reed), but here’s where things get interesting – and a bit confusing.

This particular species name is extremely elusive in current botanical literature and databases. While the genus Calamagrostis is well-established and includes many recognized species, pseudophragmites appears to be either:

  • An outdated or synonymous name that’s been reclassified
  • A regional or local name that hasn’t gained widespread botanical recognition
  • A name that exists in older literature but may not represent a currently accepted species

The Calamagrostis Family Tree

What we do know is that if this plant exists, it would be part of the wonderful world of reed grasses. Calamagrostis species are typically:

  • Cool-season perennial grasses
  • Often found in wetland or moist soil conditions
  • Known for their graceful, feathery seed heads
  • Valuable for wildlife habitat and erosion control

Many Calamagrostis species are excellent garden plants, offering four-season interest with their elegant form and movement in the breeze.

A Gardener’s Dilemma

If you’re hoping to add Calamagrostis pseudophragmites to your garden, you might be facing a wild goose chase. Without clear identification and reliable sources, it’s nearly impossible to provide specific growing recommendations or even confirm where you might find this plant.

However, this presents a perfect opportunity to explore the many wonderful and well-documented Calamagrostis species that are readily available and thoroughly understood by the gardening community.

Better Alternatives to Consider

Instead of hunting for this elusive species, consider these well-known and garden-worthy Calamagrostis options:

  • Calamagrostis x acutiflora (Feather Reed Grass) – A popular ornamental with upright habit
  • Calamagrostis brachytricha (Korean Feather Reed Grass) – Beautiful fall color and soft texture
  • Calamagrostis canadensis (Canada Reed Grass) – A native option for naturalized areas

The Bottom Line

While the mystery of Calamagrostis pseudophragmites remains unsolved, this search highlights an important lesson for gardeners: always verify plant names with reliable sources before making purchasing decisions. When in doubt, consult with local botanists, extension services, or reputable nurseries who can help you identify exactly what you’re looking for.

Sometimes the most rewarding gardening adventures come from exploring well-documented plants that we know will thrive in our gardens, rather than chasing botanical phantoms that may not even exist!

Calamagrostis Pseudophragmites

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 pseudophragmites (Haller f.) Koeler

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