North America Native Plant

Oddleaf Dung Moss

Botanical name: Splachnum vasculosum var. heterophyllum

USDA symbol: SPVAH

Habit: nonvascular

Native status: Native to North America  

Synonyms: Splachnum heterophyllum Drumm. (SPHE5)   

Oddleaf Dung Moss: A Fascinating but Unusual Garden Visitor If you’ve ever wondered about the tiny green carpets that appear in unexpected places around your garden, you might have encountered something quite special. Meet the oddleaf dung moss (Splachnum vasculosum var. heterophyllum), a native North American moss with a rather ...

Oddleaf Dung Moss: A Fascinating but Unusual Garden Visitor

If you’ve ever wondered about the tiny green carpets that appear in unexpected places around your garden, you might have encountered something quite special. Meet the oddleaf dung moss (Splachnum vasculosum var. heterophyllum), a native North American moss with a rather unique lifestyle that might surprise you.

What Exactly Is Oddleaf Dung Moss?

Don’t let the name fool you – while this moss does have an affinity for nutrient-rich organic matter, it’s actually a fascinating example of nature’s recycling system at work. This small, terrestrial moss belongs to the bryophyte family, making it a relative of other mosses, liverworts, and hornworts. Unlike typical garden plants, oddleaf dung moss is herbaceous and often attaches itself to solid surfaces rather than growing directly in soil.

You might also see this moss referred to by its scientific synonym, Splachnum heterophyllum, in older botanical references.

Where You’ll Find This Native Moss

As a native species to North America, oddleaf dung moss plays an important role in natural ecosystems, particularly in northern and boreal regions. While specific distribution details for this variety aren’t widely documented, members of the Splachnum genus are typically found in cooler, humid environments.

Is It Beneficial for Your Garden?

Here’s where things get interesting – oddleaf dung moss isn’t really a plant you can deliberately cultivate or add to your garden design. Instead, it’s more of an ecological indicator that shows up when conditions are just right. If you spot it in your landscape, consider it a sign of:

  • Healthy soil biology and decomposition processes
  • Adequate moisture levels
  • Good organic matter cycling
  • Minimal chemical disturbance

How to Identify Oddleaf Dung Moss

Spotting this moss requires a keen eye, as it’s quite small and often overlooked. Look for these identifying features:

  • Tiny, green moss plants growing in small patches
  • Preference for growing on or near decomposing organic matter
  • Distinctive spore-bearing structures when present
  • Tendency to appear in areas with consistent moisture

Should You Encourage It in Your Garden?

While you can’t exactly plant oddleaf dung moss like you would a perennial, you can create conditions that support native moss communities in general:

  • Maintain areas with natural organic matter decomposition
  • Avoid over-cleaning garden beds
  • Reduce or eliminate chemical treatments in moss-friendly areas
  • Provide consistent moisture without waterlogging

The Bottom Line

Oddleaf dung moss is more of a delightful surprise than a planned garden addition. If you’re lucky enough to spot this native moss in your landscape, take it as a compliment – it means your garden ecosystem is healthy enough to support these specialized little plants. Rather than trying to cultivate it directly, focus on maintaining the natural conditions that allow native mosses like this one to thrive on their own terms.

Remember, the presence of native mosses like oddleaf dung moss indicates a balanced, chemical-free environment – something every wildlife-friendly gardener should celebrate!

Oddleaf 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 vasculosum Hedw. - splachnum 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