Does it need full sun?

It prefers partial shade but can handle full sun if the soil stays moist.

It tolerates light foot traffic but is not a substitute for heavy duty lawn grass.

Plant guide

Procumbent pearlwort.

Sagina procumbens

Pronounced sah-JY-nah pro-KUM-benz

Also known as Bird-eye Pearlwort, Birdeye Pearlwort, Birdseye Pearlwort, Matted Pearlwort, Procumbent Pearlwort, Procumbent Pearlwort, Beads, Birdeye Pearlwort, Birdeye, Birdseye Pearlwort, Mossy Pearlwort, Pearlwort, Spreading Pearlwort

Procumbent Pearlwort — Photo by Juan Carlos Caicedo Hernández (CC BY) via iNaturalist

This low growing plant forms a dense mat of tiny green leaves that look like moss. It thrives in damp, cool spots and often pops up in the cracks of garden paths. It is a hardy little perennial that stays quite close to the ground.

Another photo of procumbent pearlwort — Photo by Richard Fuller (CC0) via gbif

At a glance

Care level: Easy
Plant type: Perennial herb
Light: Partial shade to full sun
Indoor light: Bright indirect
Water: Every 2 to 5 days
Mature size: 1 to 2 inches tall
Growth rate: Medium
Hardiness: USDA 4 to 9
Bloom time: Late spring to summer

Care

Keep the soil consistently moist, as this plant hates drying out completely. Watch for yellowing leaves, which often signal that the soil has become too dry or the drainage is poor. It prefers cooler temperatures and does best when it is not exposed to intense, scorching heat.

Watering: Keep the soil evenly damp to the touch at all times.
Feeding: Apply a balanced, diluted liquid fertilizer during the active growing season.
Pruning: Trim back any straggly or dead stems to encourage a tighter, neater mat.
Repotting: Repot only when the plant has completely filled its container or looks crowded.
Soil: Moist, well draining, sandy or loamy soil
Soil pH: Acidic to neutral
Temperature: -34 to 30°C
Humidity: 40 to 80%
Drought tolerance: Low
Lifespan: Perennial, typically 3 to 5 years.
Deer and rabbits: Moderate

Signs it needs repotting

The mat becomes too dense and starts to lift out of the pot.
Water drains through too quickly due to root binding.

Safety

People: There are no reports of significant toxicity in humans.
Children: The plant is small and low growing, so it poses no significant risk to children.
Edibility: This plant is not considered edible for humans.

How to identify it

Tiny, narrow, grass like leaves
Forms low, dense, mossy mats
Small, white, four petaled flowers
Grows in spreading, creeping clumps

Height: 0.02 to 0.05m
Spread: 0.1 to 0.3m
Leaves: green, evergreen
Flowers: white, 0.3 to 0.5cm
Fruit: brown, late summer

Problems to watch for

Root rot · Occurs when the soil stays consistently waterlogged for too long.

By symptom

Plant problems by symptom

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Growing it

Propagation: seed, division
When to plant: spring, autumn
Overwintering: It is quite hardy and does not require special winter protection in most climates. Just keep the area clear of heavy debris.
In containers: It grows well in shallow containers or troughs, provided the soil is kept consistently moist.

Division

1. Carefully lift a clump of the plant in spring.
2. Gently pull the mat apart into smaller sections.
3. Replant the sections in moist soil.

Pair this plant with other low growing, moisture loving species to create a lush, living carpet.

Grows well with

Creeping Thyme · They share similar low growing habits, though thyme prefers drier, sharply drained soil.
Blue Star Creeper · It creates a beautiful textural contrast while filling in gaps.

Similar species

Irish Moss · It is very similar in appearance but often used more frequently in garden design.

Science

Family: Caryophyllaceae
Genus: Sagina
Order: Caryophyllales
Class: Magnoliopsida
Native range: Europe and parts of North America.
Conservation: It is a common and widespread species, not of conservation concern.

It survives by colonizing disturbed, damp, and compacted soils where competition from taller plants is minimal.

Value to wildlife: ground cover habitat
Pollinators: bees, beetles
Uses: ground cover, rock garden filler, pathway edging

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 5/9
Light: 5/9
Temperature: 5/9
Moisture: 7/9
Nutrients: 4/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?: It prefers partial shade but can handle full sun if the soil stays moist.
Can I walk on it?: It tolerates light foot traffic but is not a substitute for heavy duty lawn grass.

Where the name comes from

The genus name Sagina comes from the Latin word for fattening, referring to its use as fodder, while procumbens describes its low, spreading growth habit.

Good to know

It is commonly called procumbent pearlwort.
It thrives in compacted soil where other plants struggle.
It forms dense, moss like mats that stay green year round.

Keep your procumbent pearlwort growing

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This guide was generated with AI on October 19, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.