Is it a good lawn grass?

It is generally not recommended for lawns as it grows in clumps and can look untidy.

Regular mowing before it sets seed is the most effective way to prevent it from spreading.

Plant guide

Yorkshire fog.

Holcus lanatus

Pronounced HOL-kus lah-NAY-tus

Also known as Common Velvetgrass, Fog Grass, Mesquite, Soft Grass, Soft-meadow Grass, Tufted Softgrass, Velvet Grass

Yorkshire fog is a soft, perennial grass that often grows in clumps. It is quite adaptable and frequently found in meadows or along roadsides. You will recognize it by its velvety texture and pale, purplish flower heads.

At a glance

Care level: Easy
Plant type: Perennial grass
Light: Full sun to partial shade
Indoor light: Direct sun
Water: Every 3 to 7 days
Mature size: 30 to 60 cm
Growth rate: Fast
Hardiness: USDA 4 to 9
Bloom time: Late spring to mid summer

Care

Keep the soil consistently moist as this grass thrives in damp conditions. Watch for yellowing leaves which can indicate poor drainage or lack of nutrients. It spreads easily, so keep an eye on it if you are planting it in a garden bed.

Watering: Keep the soil evenly moist but not waterlogged.
Feeding: Apply a balanced fertilizer during the active growing season.
Pruning: Trim back dead foliage in late winter to encourage fresh spring growth.
Repotting: Repot when the root system becomes crowded and starts to lift out of the container.
Soil: Moist, fertile, well-draining soil
Soil pH: 5.0 to 7.5
Temperature: -20 to 35°C
Humidity: 40 to 80%
Drought tolerance: Low
Lifespan: Perennial, typically 3 to 5 years.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes
Water sitting on the surface for too long
The plant becoming root-bound and stunted

Safety

People: It is not considered toxic to humans, though it is not a food source.
Children: The foliage is generally safe, but the sharp seed heads can be irritating if handled roughly.
Contact allergens: The fine hairs on the leaves can cause mild skin irritation in sensitive individuals.
Airborne allergens: The pollen is a significant allergen for many people during the late spring and summer months.
Edibility: This grass is not intended for human consumption and may cause digestive upset.

How to identify it

Soft, velvety hairs on leaves
Pale green or purplish flower spikes
Forms dense, low growing tufts
Ligules are membranous and hairy

Height: 0.2 to 1m
Spread: 0.3 to 0.6m
Leaves: gray-green, semi-evergreen
Flowers: pink, purple, white, 0.5 to 0.8cm

Common problems

Rust — Fungal infection causing orange or brown pustules on the leaves.

Growing it

Propagation: seed, division
When to plant: spring, autumn
Overwintering: The foliage may die back slightly in cold weather, but it generally remains green in milder climates. No special protection is required.
In containers: It is rarely grown in containers as it prefers open ground, but it can be kept in a large pot if kept consistently moist.

Division

1. Dig up a mature clump in early spring.
2. Use a sharp spade to divide the root ball into smaller sections.
3. Replant the sections immediately in moist soil.

Seed

1. Collect seeds in late summer once they turn brown.
2. Sow seeds directly into prepared soil in autumn.
3. Keep the area consistently moist until germination.

Pair this grass with moisture-loving wildflowers to create a naturalistic meadow aesthetic.

Grows well with

Meadow Buttercup — They naturally occur together in damp, grassy meadows.
Common Sorrel — This plant thrives in similar acidic, moist soil conditions.

Similar species

Creeping Soft Grass — It is very similar but spreads more aggressively via long, underground rhizomes.

Science

Family: Poaceae
Genus: Holcus
Order: Poales
Class: Liliopsida
Native range: Europe, North Africa, and Western Asia.
Conservation: It is a common, widespread species and is not of conservation concern.

It is a resilient grass that spreads via seeds and short rhizomes, allowing it to dominate in damp, acidic meadows.

Value to wildlife: larval host plant
Pollinators: butterflies
Uses: ornamental grass, erosion control, pasture forage

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 4/9
Light: 7/9
Temperature: 5/9
Moisture: 6/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

Is it a good lawn grass?: It is generally not recommended for lawns as it grows in clumps and can look untidy.
How do I control it?: Regular mowing before it sets seed is the most effective way to prevent it from spreading.

Where the name comes from

The genus name Holcus comes from the Greek word for a type of grass, while the specific epithet lanatus refers to the woolly, hairy texture of the leaves.

Good to know

It is often called Yorkshire fog because of the way the flower heads appear hazy in the morning light.
The plant thrives in damp, nutrient-poor soils where other grasses struggle.
It is a highly successful colonizer of disturbed ground.

Is your yorkshire fog looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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