North America Native Plant

Pennsylvania Dung Moss

Botanical name: Splachnum pennsylvanicum

USDA symbol: SPPE6

Habit: nonvascular

Native status: Native to North America  

Synonyms: Tetraplodon pennsylvanicum (Brid.) Sayre (TEPE3)   

Pennsylvania Dung Moss: A Fascinating Native Bryophyte Worth Knowing Meet Pennsylvania dung moss (Splachnum pennsylvanicum), one of nature’s more uniquely named native plants! Don’t let the somewhat unflattering common name fool you – this little moss plays an important role in North American ecosystems and offers fascinating insights into the ...

Pennsylvania Dung Moss: A Fascinating Native Bryophyte Worth Knowing

Meet Pennsylvania dung moss (Splachnum pennsylvanicum), one of nature’s more uniquely named native plants! Don’t let the somewhat unflattering common name fool you – this little moss plays an important role in North American ecosystems and offers fascinating insights into the often-overlooked world of bryophytes.

What Exactly Is Pennsylvania Dung Moss?

Pennsylvania dung moss is a small, terrestrial bryophyte native to North America. As a moss, it’s part of an ancient group of non-flowering plants that reproduce through spores rather than seeds. This herbaceous plant typically attaches itself to solid surfaces like rocks, logs, or other organic matter rather than growing directly in soil.

You might also see this species listed under its scientific synonym, Tetraplodon pennsylvanicum, in older botanical references.

Where to Find This Native Moss

This moss calls eastern North America home, with populations scattered throughout the northeastern United States and southeastern Canada. It thrives in the cooler, moister climates typical of these regions.

Spotting Pennsylvania Dung Moss in the Wild

Identifying Pennsylvania dung moss requires a keen eye, as it’s quite small and can easily be overlooked. Here’s what to look for:

  • Tiny, low-growing moss forming small patches
  • Distinctive sporophytes (reproductive structures) with enlarged, often colorful capsules
  • Preference for growing on decaying organic matter
  • Typically found in moist, shaded woodland environments

Is It Beneficial for Your Garden?

While Pennsylvania dung moss isn’t something you’d typically plant or cultivate in a traditional garden setting, it can be beneficial to natural landscapes in several ways:

  • Contributes to ecosystem diversity and health
  • Helps with moisture retention in woodland areas
  • Plays a role in nutrient cycling as it breaks down organic matter
  • Provides habitat for tiny invertebrates

Creating Moss-Friendly Conditions

Rather than trying to grow Pennsylvania dung moss directly, you can create conditions that might naturally attract various native moss species to your property:

  • Maintain moist, shaded areas with organic debris
  • Avoid using chemicals that might harm delicate bryophytes
  • Leave fallen logs and organic matter in natural areas
  • Ensure consistent moisture in woodland garden sections

The Bottom Line

Pennsylvania dung moss may not be a showstopper in the traditional gardening sense, but it’s a valuable part of our native plant heritage. If you’re lucky enough to spot this little moss in the wild, take a moment to appreciate its unique place in the ecosystem. And if you’re interested in supporting native bryophytes, focus on creating the kind of natural, undisturbed habitats where these fascinating plants can thrive on their own terms.

Remember, the best way to support native mosses like Pennsylvania dung moss is often simply to let nature take its course in appropriate areas of your landscape!

Pennsylvania Dung Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Funariales

Family

Splachnaceae Grev. & Arn.

Genus

Splachnum Hedw. - splachnum dung moss

Species

Splachnum pennsylvanicum (Brid.) Grout ex H.A. Crum - Pennsylvania dung moss

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