North America Native Plant

Calammophila

Botanical name: ×Calammophila

USDA symbol: CALAM6

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Calammophila: A Mysterious Native Grass Worth Knowing About If you’re a native plant enthusiast always on the lookout for something unique, you might have stumbled across the intriguing ×Calammophila. This native grass has caught the attention of botanists, but you won’t find it discussed in many gardening circles—and there’s a ...

Calammophila: A Mysterious Native Grass Worth Knowing About

If you’re a native plant enthusiast always on the lookout for something unique, you might have stumbled across the intriguing ×Calammophila. This native grass has caught the attention of botanists, but you won’t find it discussed in many gardening circles—and there’s a good reason for that!

What Exactly Is Calammophila?

×Calammophila (commonly known as calammophila) is a perennial grass native to the United States. The × symbol at the beginning of its name is your first clue that this isn’t your average backyard grass—it indicates this is a hybrid genus, meaning it’s the result of crossbreeding between different grass species.

As a member of the grass family, ×Calammophila falls into that wonderfully diverse group of graminoids that includes not just true grasses, but also sedges, rushes, and other grass-like plants that add texture and movement to landscapes.

Where You’ll Find This Elusive Grass

Currently, ×Calammophila has been documented growing in Michigan, making it quite geographically limited compared to many other native grasses. This narrow distribution adds to its mystique and rarity in the gardening world.

Should You Grow Calammophila in Your Garden?

Here’s where things get interesting (and a bit frustrating for curious gardeners). While ×Calammophila is undoubtedly a legitimate native plant, finding detailed growing information—or even the plants themselves—proves challenging. The limited documentation suggests this grass may be quite rare or perhaps difficult to cultivate outside its natural habitat.

For most home gardeners, especially those outside of Michigan, obtaining and successfully growing ×Calammophila might be more of a botanical treasure hunt than a practical landscaping choice.

Native Alternatives to Consider

If you’re drawn to native grasses (and who isn’t?), consider these well-documented and readily available alternatives that offer similar benefits:

  • Little Bluestem (Schizachyrium scoparium) – A beautiful bunching grass with stunning fall color
  • Prairie Dropseed (Sporobolus heterolepis) – Fragrant and fine-textured with excellent drought tolerance
  • Buffalo Grass (Poaceae species) – Perfect for naturalized areas and low-maintenance landscapes
  • Big Bluestem (Andropogon gerardii) – A tall prairie grass ideal for larger spaces

The Bottom Line

×Calammophila represents one of those fascinating plants that reminds us how much we still don’t know about our native flora. While it may not be the practical choice for most gardens, its existence highlights the incredible diversity of native grasses available to us.

If you’re specifically interested in Michigan native plants or have connections to botanical research institutions, you might be able to learn more about this mysterious grass. For the rest of us, celebrating and growing the many well-documented native grasses available is a wonderful way to support local ecosystems while creating beautiful, low-maintenance landscapes.

Sometimes the most intriguing plants are the ones that keep a few secrets—and ×Calammophila certainly fits that bill!

Calammophila

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

×Calammophila Brand - calammophila

Species

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