North America Native Plant

Waterfall Copper Moss

Botanical name: Mielichhoferia macrocarpa

USDA symbol: MIMA10

Habit: nonvascular

Native status: Native to North America  

Synonyms: Mielichhoferia macrocarpa (Hook.) Bruch & Schimp. ex A. Jaeger var. pungens E.B. Bartram (MIMAP)   

Waterfall Copper Moss: A Rare Mountain Gem for Your Garden Meet one of nature’s most intriguing little characters: the waterfall copper moss (Mielichhoferia macrocarpa). This isn’t your typical backyard moss – it’s a specialized bryophyte that brings a touch of mountain magic to carefully crafted garden spaces. What Makes Waterfall ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Waterfall Copper Moss: A Rare Mountain Gem for Your Garden

Meet one of nature’s most intriguing little characters: the waterfall copper moss (Mielichhoferia macrocarpa). This isn’t your typical backyard moss – it’s a specialized bryophyte that brings a touch of mountain magic to carefully crafted garden spaces.

What Makes Waterfall Copper Moss Special?

Waterfall copper moss is a native North American bryophyte that belongs to the fascinating world of non-flowering plants. Unlike the common mosses you might find carpeting your lawn, this species has earned its evocative name from its preferred habitat near waterfalls and its distinctive copper-tinged appearance.

As a bryophyte, this moss doesn’t have true roots, stems, or leaves like flowering plants. Instead, it forms small cushions or mats that attach themselves to rocks, fallen logs, or other solid surfaces rather than growing directly in soil. This unique growth habit makes it a master of finding footholds in seemingly impossible places.

Where Does It Call Home?

This copper-colored beauty is native to the mountainous regions of western North America, where it thrives in the cool, moist conditions found near streams and waterfalls. In the wild, you’ll typically encounter it in alpine and subalpine environments where the air stays fresh and humidity levels remain consistently high.

A Word About Rarity

Here’s something important to know: waterfall copper moss has a conservation status of S2S3, indicating it’s considered somewhat rare in its native range. This means if you’re lucky enough to spot it in the wild, it’s best to admire it from a distance and leave it undisturbed for future generations to enjoy.

Garden Benefits and Identification

While waterfall copper moss won’t attract bees or butterflies (mosses don’t produce flowers), it offers other valuable benefits to garden ecosystems:

  • Provides microhabitat for tiny invertebrates and soil organisms
  • Helps retain moisture in rock gardens and alpine settings
  • Adds unique texture and color variation to moss gardens
  • Requires no fertilizers or pesticides, supporting clean gardening practices

To identify waterfall copper moss, look for small, cushion-like growth forms with a distinctive copper or bronze coloration. The moss forms dense, low-growing mats that rarely exceed a few centimeters in height. Its leaves are small and densely packed, giving it a velvety appearance when viewed up close.

Creating the Right Conditions

If you’re interested in incorporating waterfall copper moss into your garden, you’ll need to recreate its preferred mountain habitat. This moss thrives in:

  • Cool, consistently moist conditions (USDA zones 3-7)
  • Shaded or partially shaded locations
  • Areas with excellent air circulation
  • Rocky surfaces or well-draining substrates
  • High humidity environments

Rock gardens, alpine gardens, and specialized moss gardens are the most suitable settings for this mountain dweller. It’s particularly at home near water features that can provide the consistent moisture and humidity it craves.

The Responsible Approach

Given its rarity status, we strongly recommend against collecting waterfall copper moss from the wild. Instead, if you’re determined to grow this species, seek out responsibly sourced material from specialized native plant nurseries or moss suppliers who propagate their stock sustainably.

For most gardeners, appreciating waterfall copper moss in its natural habitat or in botanical gardens might be the most appropriate way to connect with this remarkable species. Consider it a special treat – like spotting a rare bird – when you encounter it during mountain hikes or nature walks.

Alternative Options

If you’re drawn to the idea of incorporating native mosses into your garden but waterfall copper moss isn’t accessible, consider other native moss species that are more commonly available and less conservation-sensitive. Many local native plant societies can provide guidance on moss species appropriate for your specific region and garden conditions.

Waterfall Copper Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Bryales

Family

Bryaceae Rchb.

Genus

Mielichhoferia Nees & Hornsch. - copper moss

Species

Mielichhoferia macrocarpa (Hook.) Bruch & Schimp. ex A. Jaeger - waterfall copper moss

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