Tree Apron Moss – Landscaping Grade | Moss for Walls, Tree Bases & Bark

Live tree apron moss (Anomodon attenuatus) grows tightly to trunks and rock, forming fine, skinny, fern-like mats. In the wild it favours deciduous forests, where it often forms a tree-skirt on mature oaks and cloaks boulders — and that is exactly what it is for in a garden. It is the one moss in our landscaping range that works vertically rather than underfoot. Cut to order at our Pennsylvania facility.

Buying for a different job? This page is landscaping grade, sold by the square foot for outdoor planting. The same species is also prepared for enclosed builds: Tree Apron Moss for Terrariums — hand-cleaned and checked for debris and pests, in pieces sized for a tank.

Tree apron moss at a glance

Botanical name	Anomodon attenuatus
Grows on	Bark, tree trunks, boulders — not usually on soil
Light	Dappled light to shade (medium shade)
Moisture	Moderate
Substrate & pH	Bark, tree trunks, boulders — neutral pH
Texture	Fine, skinny, fern-like
Habit	Pleurocarpous, mat-forming; grows tightly to trunks and rock, vertically
Design role	Tree skirts, rock gardens, boulder blanket
Landscape uses	Tree skirts, lime boulders

A moss that grows up, not across

Almost every other moss we sell is a ground treatment: you prepare a surface, lay the moss flat, and it knits across it. Tree apron is different. It grows tightly to trunks and rock, and it is not usually found on soil at all.

That changes what you are buying it for. You are not covering an area — you are dressing a feature: the base and lower trunk of a mature tree, the face of a boulder, the vertical of a stone wall or outcrop. It is what makes a young planting look like it has been there for decades, because a mossed trunk reads as age in a way that mossed ground does not.

Two things it does well

• Tree skirts. In deciduous woodland this species often forms a skirt on mature oaks — a collar of moss around the base and lower trunk. Recreating that around a specimen tree is its signature use.
• Cloaking boulders. It clads stone rather than draping over it, following the surface contours tightly. Pair it with Fern Moss — which blankets boulders and moist sites — for two different textures on the same rock group. The two appear together in a third of tree apron orders.

How much do you need?

This is feature work, not area coverage — every order we ship for this species is a small size. Measure the surface you actually want mossed: the circumference of a trunk multiplied by the height of the skirt, or the visible face of a boulder.

• A single tree skirt or one boulder face: 1–5 sq ft
• A group of trees, or a rock outcrop: 5–25 sq ft
• A woodland scheme with several features: 25 sq ft and above

Installing tree apron moss

1. Choose a compatible surface. Bark, tree trunks or boulders. This species is not a soil moss, so a bare patch of ground is the wrong place for it.
2. Clean the surface of loose debris so the moss makes contact with the bark or stone itself, not with what is sitting on it.
3. Gently water the moss top and bottom before and during placement — damp moss is more mouldable and attaches better.
4. Install directly against the bark or stone and tuck it firmly into the surface contours. Follow the shape rather than fighting it: into the fissures of oak bark, around the curve of a boulder.
5. Hold it in place. Moss Tac for vertical or difficult placements; on gentler surfaces, natural elements like sticks and stones can do the job while it takes.
6. Mist it in, then keep it misted through establishment.

Moss does not root into its substrate the way a vascular plant does — firm, continuous contact is what supports moisture retention and attachment, which is why tucking it into the contours matters more here than anywhere else. For unfamiliar conditions, try one trunk or one boulder face before doing a whole group. The complete method is in the Moss Planting Guide (PDF).

Care

• Mist, do not soak. Morning mistings for a few minutes during the establishment period — the first three months — are helpful, and matter more on a vertical surface where water runs off rather than sitting.
• Let it dry between waterings. Moss is adapted to withstand periods of drought and is healthiest in alternating dry and moist conditions.
• Water with distilled, filtered or rain water where you can, and avoid heavy watering that could flood or dislodge a mat that has not yet taken hold.
• Keep it in dappled light to shade. Medium shade suits it; deciduous canopy is its natural setting.
• No chemicals. Moss has no protective skin like other plants — keep it away from chemicals, oils, toxins, aerosols and cleaners.
• Sweep, do not rake any debris that lands on horizontal sections, or use a leaf blower on a very gentle setting from a distance.

Not installing immediately? Store it dry, somewhere cool and out of direct light, with good airflow and nothing smothering it. Moss is best stored dry — drying does not harm it.

Completing the planting

Tree apron dresses the vertical. The ground around the feature, and the accents beside it, are what make the composition read.

Other formats of this species

This page is landscaping grade, sold by the square foot for outdoor planting. The same species is also prepared in terrarium sizes — hand-cleaned and checked for debris and pests: Tree Apron Moss for Terrariums (Anomodon attenuatus), where its habit of clinging to bark and stone makes it a natural for driftwood, cork and hardscape inside a build.

Frequently asked questions

Will it grow on a tree trunk?

That is its natural habit. In deciduous woodland it often forms a tree-skirt on mature oaks, growing tightly to the bark. Install it directly against the trunk, tuck it into the contours of the bark, and use Moss Tac to hold it while it takes.

Can I use it as a ground cover?

It is not usually found on soil — it grows on bark, trunks and boulders. For shaded ground, use sheet moss; for boulders you want blanketed rather than clad, fern moss.

Will it harm my tree?

Moss is not a parasite — it takes nothing from the bark it grows on, and it is what naturally colonises mature trunks in deciduous woodland. Keep chemicals, oils and cleaners away from it, as moss has no protective skin.

Do I need Moss Tac?

For vertical or difficult placements, yes — it holds the mat against bark or stone while the moss attaches. This is the species that needs it most, because gravity is working against you the whole time.

Is this the same as the tree moss in terrariums?

Our Tree Apron Moss for Terrariums is the same species, cut and cleaned for enclosed builds. Note that we also sell a Miniature Tree Moss for terrariums — that is a different species (Climacium dendroides), named for looking like a tiny tree rather than for growing on one.