North America Native Plant

Ulota Moss

Botanical name: Ulota obtusiuscula

USDA symbol: ULOB

Habit: nonvascular

Native status: Native to North America  

Synonyms: Ulota crispa (Hedw.) Brid. var. alaskana (Cardot & Thér.) Grout (ULCRA)   

Discovering Ulota Moss: A Tiny Wonder for Your Garden If you’ve ever taken a close look at the bark of trees or weathered rocks in your garden, you might have spotted something that looks like tiny, twisted green cushions. Meet ulota moss (Ulota obtusiuscula), a fascinating little plant that’s more ...

Discovering Ulota Moss: A Tiny Wonder for Your Garden

If you’ve ever taken a close look at the bark of trees or weathered rocks in your garden, you might have spotted something that looks like tiny, twisted green cushions. Meet ulota moss (Ulota obtusiuscula), a fascinating little plant that’s more common than you might think, yet often overlooked by gardeners.

What Exactly Is Ulota Moss?

Ulota moss is a native North American species that belongs to the wonderful world of bryophytes – those ancient, non-flowering plants that have been quietly doing their thing for millions of years. Unlike the plants we typically think of when gardening, this little moss doesn’t have roots, flowers, or seeds. Instead, it’s a herbaceous plant that prefers to attach itself to solid surfaces like tree bark, rocks, or even old wooden fences rather than growing in soil.

You might also encounter this moss under its scientific synonym, Ulota crispa var. alaskana, but don’t let the fancy names intimidate you – it’s still the same charming little plant.

Where Does Ulota Moss Call Home?

This moss is native to North America, with a particular fondness for the western regions and Pacific Northwest. You’ll often find it thriving in areas with cool, humid conditions where it can take advantage of the moisture-rich environment.

Spotting Ulota Moss in the Wild (and Your Yard)

Here’s where ulota moss gets really interesting – it’s a bit of a shape-shifter! When conditions are moist, the moss appears as small, soft green cushions or mats. But here’s the quirky part: when things dry out, the leaves twist and curl up, giving the moss a completely different appearance. This twisting behavior is actually the plant’s clever way of conserving moisture during dry spells.

Look for these characteristics when identifying ulota moss:

  • Small cushion-like growth form
  • Leaves that twist and curl when dry
  • Preference for growing on bark, rocks, or wood rather than soil
  • Bright green color when moist

Is Ulota Moss Good for Your Garden?

While you won’t be planting ulota moss like you would a petunia, having it show up naturally in your garden is actually a pretty good sign! This little moss can be quite beneficial in several ways:

Environmental indicator: The presence of ulota moss often indicates good air quality and appropriate humidity levels – it’s like having a tiny environmental monitor in your yard.

Naturalistic appeal: If you’re going for that authentic woodland or naturalistic garden look, ulota moss adds genuine wild character to rocks, tree trunks, and weathered garden structures.

Low maintenance: Once established, this moss requires absolutely no care from you. It’s the ultimate low-maintenance garden resident.

Habitat creation: While mosses don’t attract pollinators (they don’t have flowers, after all), they do create microhabitats for tiny creatures and can help retain moisture in their immediate surroundings.

Creating Conditions for Ulota Moss

If you’d like to encourage ulota moss in your garden, focus on creating the right environment rather than trying to plant it directly. This moss thrives in:

  • Shaded to partially shaded areas
  • Locations with consistent humidity
  • Spots with good air circulation
  • Areas with suitable surfaces like rough tree bark or porous rocks

The moss is quite cold-hardy and can survive in a wide range of climates, making it a resilient addition to gardens across many regions.

A Word of Patience

Unlike typical garden plants, ulota moss operates on its own timeline. You can’t rush it, plant it on demand, or expect instant results. If conditions are right in your garden, it might just show up on its own – and that’s part of its charm. Think of it as a delightful surprise rather than a planned addition to your landscape.

So next time you’re wandering through your garden, take a moment to look closely at those tree trunks and weathered surfaces. You might just discover that ulota moss has already made itself at home, quietly adding its own unique touch to your outdoor space.

Ulota Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Orthotrichales

Family

Orthotrichaceae Arn.

Genus

Ulota D. Mohr - ulota moss

Species

Ulota obtusiuscula Müll. Hal. & Kindb. - ulota moss

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