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Guide botanique

Yorkshire fog.

Holcus lanatus

Prononciation HOL-kus lah-NAY-tus

Aussi appelée Common Velvetgrass, Fog Grass, Mesquite, Soft Grass, Soft-meadow Grass, Tufted Softgrass, Velvet Grass

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Yorkshire fog
Photo de Douglas Goldman (CC BY-SA) via iNaturalist

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.

En un coup d'œil

Niveau d'entretien
Facile
Type de plante
Perennial grass
Lumière
Full sun to partial shade
Lumière en intérieur
Soleil direct
Arrosage
Tous les 3 à 7 jours
Taille adulte
30 to 60 cm
Croissance
Rapide
Rusticité
USDA 4 à 9
Floraison
Late spring to mid summer

Entretien

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.

Arrosage
Keep the soil evenly moist but not waterlogged.
Engrais
Apply a balanced fertilizer during the active growing season.
Taille
Trim back dead foliage in late winter to encourage fresh spring growth.
Rempotage
Repot when the root system becomes crowded and starts to lift out of the container.
Sol
Moist, fertile, well-draining soil
pH du sol
5.0 to 7.5
Température
-20 à 35°C
Humidité
40 à 80%
Résistance à la sécheresse
Faible
Durée de vie
Perennial, typically 3 to 5 years.
Résistance aux chevreuils et lapins
Moyenne

Signes qu'il faut rempoter

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

Sécurité

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

Comment l'identifier

  • Soft, velvety hairs on leaves
  • Pale green or purplish flower spikes
  • Forms dense, low growing tufts
  • Ligules are membranous and hairy
Hauteur
0,2 à 1m
Envergure
0,3 à 0,6m
Feuilles
gray-green, semi-evergreen
Fleurs
pink, purple, white, 0,5 à 0,8cm

Problèmes courants

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

La cultiver

Multiplication
seed, division
Quand planter
spring, autumn
Hivernage
The foliage may die back slightly in cold weather, but it generally remains green in milder climates. No special protection is required.
En pot
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. 1. Dig up a mature clump in early spring.
  2. 2. Use a sharp spade to divide the root ball into smaller sections.
  3. 3. Replant the sections immediately in moist soil.

Seed

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

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

Bonnes associations

  • Meadow buttercup — They naturally occur together in damp, grassy meadows.
  • Garden sorrel — This plant thrives in similar acidic, moist soil conditions.

Espèces similaires

  • Holcus mollis — It is very similar but spreads more aggressively via long, underground rhizomes.

Science

Famille
Poaceae
Genre
Holcus
Ordre
Poales
Classe
Liliopsida
Région d'origine
Europe, North Africa, and Western Asia.
Préservation
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.

Intérêt pour la faune
larval host plant
Pollinisateurs
papillons
Utilisations
ornamental grass, erosion control, pasture forage

Au fil des saisons

JFMAMJJASOND
Floraison
Fructification
Feuillage

Repères écologiques

Salinité
2/9
Réaction du sol
4/9
Lumière
7/9
Température
5/9
Humidité
6/9
Nutriments
3/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

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.

D'où vient le nom

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.

Bon à savoir

  • 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.

Ta plante a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

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Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.