Does it need full sun?

No, it prefers partial to full shade and will scorch in hot sun.

It is best to leave it alone, but you can trim back tattered foliage in early spring.

Plant guide

Greater wood-rush.

Luzula sylvatica

Pronounced LOO-zoo-lah sil-VAT-ih-kuh

Also known as Great Wood-Rush, Great Woodrush

Luzula sylvatica — Photo by Andy Donegan (CC BY) via gbif

This lovely evergreen perennial forms lush, grassy clumps that thrive in shaded woodland settings. It is a fantastic choice for adding texture to the darker corners of your garden. You will find it stays green throughout the year, providing nice color even in winter.

At a glance

Care level: Easy
Plant type: Perennial grass-like herb
Light: Partial shade to full shade
Indoor light: Medium light
Water: Every 3 to 7 days
Mature size: 1 to 2 feet
Growth rate: Medium
Hardiness: USDA 4 to 9
Bloom time: Mid to late spring

Care

Keep the soil consistently moist, as this plant dislikes drying out completely. Watch for browning leaf tips, which often signal that the soil has become too dry or the air is too hot. It prefers cool, shaded spots and will spread slowly over time to create a nice ground cover.

Watering: Keep the soil evenly moist but not waterlogged.
Feeding: Apply a balanced organic fertilizer once in early spring.
Pruning: Trim back any tatty or dead foliage in late winter before new growth starts.
Repotting: Divide the clumps every few years to maintain plant vigor.
Soil: Moist, humus-rich soil
Soil pH: Acidic to neutral
Temperature: -25 to 30°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Perennial, typically 5 to 10 years
Deer and rabbits: High

Signs it needs repotting

roots circling the bottom of the pot
water draining through too quickly
plant growth slowing significantly

Safety

People: There are no reports of toxicity in humans.
Children: The foliage is not toxic, but the stiff, grass-like leaves can cause minor paper-cut style abrasions if handled roughly.
Contact allergens: The leaves have fine hairs that may cause mild skin irritation in sensitive individuals.
Airborne allergens: The pollen is wind-borne and may cause mild seasonal allergies.
Edibility: This plant is not considered edible for humans.

How to identify it

Broad, shiny, dark green leaves
Leaves have sparse white marginal hairs
Loose, airy clusters of brown flowers
Forms dense, spreading basal clumps

Height: 0.3 to 0.6m
Spread: 0.3 to 0.6m
Leaves: dark green, glossy, evergreen
Flowers: brown, tan, 0.5 to 1cm

Problems to watch for

Rust · Fungal spots appear on leaves during periods of high humidity.

By symptom

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Growing it

Propagation: division, seed
When to plant: spring, autumn
Overwintering: It is evergreen and requires no special winter protection. Simply clear away any dead debris in early spring to encourage fresh growth.
In containers: It grows well in containers, provided they are kept in a cool, shaded spot and the soil stays consistently moist.

Division

Dig up a mature clump in early spring.
Gently pull the root mass apart into smaller sections.
Replant the divisions immediately at the same depth.

Plant in large drifts to create a lush, weed-resistant carpet under trees.

Grows well with

Hosta · They share similar shade and moisture requirements.
Ferns · The contrasting textures look lovely in a woodland setting.
Bleeding Heart · It provides a nice backdrop for the spring flowers.

Similar species

Field Woodrush · It is a smaller, sun-loving relative.

Science

Family: Juncaceae
Genus: Luzula
Order: Poales
Class: Liliopsida
Native range: Europe and parts of western Asia.
Conservation: This plant is common and not of conservation concern.

It grows in moist, shaded woodland environments where it forms dense, soil-stabilizing mats.

Value to wildlife: seeds provide food for birds, provides cover for small insects
Pollinators: bees
Uses: groundcover, woodland garden, shade border, erosion control

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 2/9
Temperature: 4/9
Moisture: 6/9
Nutrients: 4/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?: No, it prefers partial to full shade and will scorch in hot sun.
Can I mow it?: It is best to leave it alone, but you can trim back tattered foliage in early spring.

Where the name comes from

The genus name Luzula comes from the Italian word 'lucciola', meaning glow-worm, referring to the way the flower heads catch the light. The species name 'sylvatica' means of the woods.

Good to know

It is not a true grass but a member of the rush family.
The leaves are fringed with long, white, silky hairs.
It remains green throughout the winter in most climates.
It is excellent for suppressing weeds in shady spots.

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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.