North America Non-native Plant

Pohlia Flexuosa

Botanical name: Pohlia flexuosa

USDA symbol: POFL2

Habit: nonvascular

Native status: Non-native, reproduces and persists in the wild in North America  

Pohlia flexuosa: The Quiet Moss Making Itself at Home in California Gardens If you’ve ever noticed tiny, green cushions growing in the shadier corners of your garden, you might have encountered Pohlia flexuosa. This small moss has quietly established itself in California landscapes, bringing a touch of old-world charm to ...

Pohlia flexuosa: The Quiet Moss Making Itself at Home in California Gardens

If you’ve ever noticed tiny, green cushions growing in the shadier corners of your garden, you might have encountered Pohlia flexuosa. This small moss has quietly established itself in California landscapes, bringing a touch of old-world charm to our Golden State gardens.

What Exactly Is Pohlia flexuosa?

Pohlia flexuosa is a terrestrial moss – one of those fascinating little green plants that includes mosses, hornworts, and liverworts. Unlike your typical garden plants, this moss is always herbaceous and has a knack for attaching itself to solid surfaces like rocks, dead wood, or even living trees rather than rooting into soil like conventional plants.

This particular moss species is what botanists call a non-native plant. It originally hails from other parts of the world but has made itself quite comfortable here in North America. What’s interesting is that it reproduces and spreads on its own without any human help – a true naturalized citizen of our landscapes.

Where You’ll Find This Moss

Currently, Pohlia flexuosa has been documented growing in California. It’s one of those quiet colonizers that tends to show up in suitable habitats and establish small populations without much fanfare.

Is This Moss Beneficial for Your Garden?

While Pohlia flexuosa might not be the showstopper of your landscape design, it does offer some subtle benefits:

  • Provides natural ground cover in areas where other plants struggle
  • Helps prevent soil erosion on slopes and around trees
  • Adds texture and year-round green color to shaded areas
  • Creates microhabitats for tiny insects and other small creatures
  • Requires absolutely zero maintenance once established

However, since this is a non-native species, you might want to consider supporting native moss species instead if you’re looking to create habitat specifically for local wildlife. California has plenty of beautiful native mosses that serve similar ecological functions while supporting our local ecosystems.

How to Identify Pohlia flexuosa

Spotting this moss requires a bit of detective work, as it’s quite small and unassuming:

  • Look for small, green cushions or mats in shaded, moist areas
  • Check around the base of trees, on rocks, or on decaying wood
  • The moss typically grows in small patches rather than extensive carpets
  • It prefers areas that stay consistently moist but not waterlogged
  • Most active growth occurs during cooler, wetter months

Living with Pohlia flexuosa

If you discover this moss in your garden, there’s no need for alarm. It’s not considered invasive or harmful to other plants. Think of it as a quiet tenant that helps fill in the gaps where other plants can’t thrive. It’s particularly useful in those tricky spots under dense tree canopies or in consistently shady areas where grass refuses to grow.

The beauty of mosses like Pohlia flexuosa is their low-impact presence. They don’t compete aggressively with other plants, don’t require watering or fertilizing, and actually help create more stable growing conditions for other shade-loving plants by retaining moisture and preventing soil erosion.

The Bottom Line

While Pohlia flexuosa isn’t a plant you’d typically choose for a formal garden design, it’s one of those helpful background players that quietly contributes to a healthy garden ecosystem. If you spot it in your landscape, you can appreciate it as a small example of nature’s ability to fill every available niche – even the tiniest, shadiest corners of our gardens.

For gardeners interested in supporting native biodiversity, consider learning about and encouraging California’s native moss species instead. But if Pohlia flexuosa has already settled into your garden, it can peacefully coexist with your other plants while providing its own subtle contributions to your landscape’s ecological tapestry.

Pohlia Flexuosa

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

Pohlia Hedw. - pohlia moss

Species

Pohlia flexuosa Harv.

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