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Guide botanique

Perennial ryegrass.

Lolium perenne

Prononciation LOH-lee-um peh-REN-ee

Aussi appelée Common Rye-Grass, English Ryegrass, Italian Ryegrass, Perennial Rye, Perennial Rye-Grass, Perennial Ryegrass

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Perennial ryegrass
Photo de Daniel Heras González (CC BY) via iNaturalist

Perennial ryegrass is a popular, cool season grass often used for lawns and pastures. It is known for its quick germination and ability to handle high foot traffic. You will find it thrives best in temperate climates with plenty of moisture.

En un coup d'œil

Niveau d'entretien
Facile
Type de plante
Grass
Lumière
Full sun
Lumière en intérieur
Soleil direct
Arrosage
Tous les 2 à 5 jours
Taille adulte
1 to 2 feet
Croissance
Rapide
Rusticité
USDA 3 à 9
Floraison
Late spring to early summer

Entretien

Keep the soil consistently moist to support its rapid growth habit. Watch for thinning patches if the grass experiences heavy traffic or prolonged heat. Regular mowing helps maintain a dense and healthy turf.

Arrosage
Keep the soil evenly moist but not waterlogged to encourage deep root development.
Engrais
Apply a balanced nitrogen fertilizer during the active growing season to maintain color.
Taille
Mow regularly to keep the grass at a height of 2 to 3 inches.
Rempotage
This plant is typically grown in outdoor lawns rather than containers.
Sol
Well drained, fertile soil
pH du sol
6.0 to 7.0
Température
-20 à 35°C
Humidité
40 à 80%

Sécurité

Humains
It is generally considered non toxic to humans.
Enfants
There are no specific safety concerns for children, though ingestion of grass is not recommended.
Allergènes de contact
The leaf blades can cause minor skin irritation or cuts if handled roughly.
Allergènes aéroportés
The pollen is a significant airborne allergen during the late spring flowering season.
Comestibilité
This grass is not intended for human consumption.

Comment l'identifier

  • Dark green, glossy leaf blades
  • Folded leaf buds in cross section
  • Smooth, hairless leaf undersides
  • Spikelet arrangement along the stem
Hauteur
0,3 à 0,9m
Envergure
0,15 à 0,3m
Feuilles
bright green, perennial
Fleurs
green, yellow, 0,5 à 1cm

Problèmes courants

  • Red Thread — A fungal disease that causes pinkish red patches in the turf during wet weather.
  • Billbugs — Larvae feed on the stems and roots, causing brown patches.

La cultiver

Multiplication
seed
Quand planter
spring, early autumn

Pair with nitrogen fixing legumes to reduce the need for synthetic fertilizers in your lawn.

Bonnes associations

  • Poa pratensis — They are often mixed together to create a durable and aesthetically pleasing lawn.
  • Trèfle blanc — Clover fixes nitrogen in the soil, which helps feed the grass.

Espèces similaires

  • Lolium multiflorum — It is an annual or biennial species that grows much faster but does not persist as long.
  • Festuca arundinacea — It is another common turf grass that is more drought tolerant than perennial ryegrass.

Science

Famille
Poaceae
Genre
Lolium
Ordre
Poales
Classe
Liliopsida
Région d'origine
Europe, Asia, and North Africa.
Préservation
It is a widely naturalized species and is not of conservation concern.

It thrives in fertile, well drained soils and is highly competitive in temperate grasslands.

Intérêt pour la faune
larval host plant, provides dense nesting cover
Pollinisateurs
abeilles
Utilisations
lawn turf, pasture forage, erosion control, sports fields

Au fil des saisons

JFMAMJJASOND
Floraison
Fructification
Feuillage

Repères écologiques

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

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How often should I mow it?
Mow weekly during the active growing season to maintain a height of 5 to 8 centimeters.
Does it need a lot of water?
It prefers consistent moisture but can survive short dry spells once established.

D'où vient le nom

The name Lolium is the classical Latin name for darnel, while perenne refers to its perennial growth habit.

Bon à savoir

  • It is one of the most widely planted grass species in the world.
  • It establishes much faster than many other cool season grasses.
  • It is often used in seed mixes to provide quick cover while slower grasses establish.

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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Télécharger l'appli

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.