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Lolium perenne (Perennial rye grass)

Intermediate
skill rating
12 hours care
per year
0.6m
Max height
0.6m
Max spread
1-3 years
To maturity

Plant details

Botanical name

Lolium perenne

Other names

Perennial rye grass, Crappe, English rye grass, Ever grass, Ray, Ray grass, Red darnel , Rye grass, White nonsuch, Perennial ryegrass

Genus

Lolium Lolium

Species

L. perenne - L. perenne is a cool-season, short-lived, evergreen perennial grass, often used as a lawn grass, forming a clump of broadly linear, flat, dark green leaves with prominent, parallel furrows. Green flower spikelets in summer turn grey or tan with age.


Lolium perenne is: Evergreen

Flower

Pale-green, Insignificant or absent, Grey in Summer

Foliage

Green in All seasons

How to care

Watch out for

Specific pests

Ants , Birds , Chafer grubs in lawns , Dog urine , Leather jackets (European crane fly) , Moles , Worm casts on lawns Ants , Birds , Chafer grubs in lawns , Dog urine , Leather jackets (European crane fly) , Moles , Worm casts on lawns

Algae in grass , Dollar spot , Lichen in grass , Ophiobolus patch , Red thread (Corticium disease) , Snow mould (fusarium patch) , Toadstools and fairy rings Algae in grass , Dollar spot , Lichen in grass , Ophiobolus patch , Red thread (Corticium disease) , Snow mould (fusarium patch) , Toadstools and fairy rings

General care

Propagation

Does not spread by underground rhizomes so reseed to repair damaged areas. Best sewn in situ in spring or early autumn. If grown as an ornamental, divide every 2-3 years in spring.

Propagation methods

Division, Seed


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Where to grow

Lolium perenne (Perennial rye grass) will reach a height of 0.6m and a spread of 0.6m after 1-3 years.

Suggested uses

Ground Cover, Beds and borders, Lawn

Cultivation

Best for cool, moist climates. Will survive in areas with cold winters where snow cover is reliable. Plant in well-drained or moist but well-drained soil in full sun. An excellent pasture grass and a suitable lawn grass. If grown as a lawn, mow to height of 4-6cm.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Lolium perenne

Other names

Perennial rye grass, Crappe, English rye grass, Ever grass, Ray, Ray grass, Red darnel , Rye grass, White nonsuch, Perennial ryegrass

Genus

Lolium Lolium

Species

L. perenne - L. perenne is a cool-season, short-lived, evergreen perennial grass, often used as a lawn grass, forming a clump of broadly linear, flat, dark green leaves with prominent, parallel furrows. Green flower spikelets in summer turn grey or tan with age.

Foliage

Evergreen


Colour

Flower

Pale-green, Insignificant or absent, Grey in Summer

Foliage

Green in All seasons


How to care

Watch out for

Specific pests

Ants , Birds , Chafer grubs in lawns , Dog urine , Leather jackets (European crane fly) , Moles , Worm casts on lawns

Specific diseases

Algae in grass , Dollar spot , Lichen in grass , Ophiobolus patch , Red thread (Corticium disease) , Snow mould (fusarium patch) , Toadstools and fairy rings

General care

Propagation

Does not spread by underground rhizomes so reseed to repair damaged areas. Best sewn in situ in spring or early autumn. If grown as an ornamental, divide every 2-3 years in spring.

Propagation methods

Division, Seed


Monthly care advice


Where to grow

Lolium perenne (Perennial rye grass) will reach a height of 0.6m and a spread of 0.6m after 1-3 years.

Suggested uses

Ground Cover, Beds and borders, Lawn

Cultivation

Best for cool, moist climates. Will survive in areas with cold winters where snow cover is reliable. Plant in well-drained or moist but well-drained soil in full sun. An excellent pasture grass and a suitable lawn grass. If grown as a lawn, mow to height of 4-6cm.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Lolium perenne (Perennial rye grass)

Common pest name

Red rice root aphid; Rice root aphid

Scientific pest name

Rhopalosiphum rufiabdominalis

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Potentially significant glasshouse pest; growers should monitor for its presence. Routine aphid control should be effective in mitigating risk.

Defra's Risk register #2

Plant name

Lolium perenne (Perennial rye grass)

Common pest name

Maize seed beetle

Scientific pest name

Clivina vagans

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Pest affecting maize in Oceania; main pathway is prohibited; unlikely to enter the UK.

Defra's Risk register #3

Plant name

Lolium perenne (Perennial rye grass)

Common pest name

Stunt nematode; Tobacco stunt nematode

Scientific pest name

Tylenchorhynchus claytoni

Type

Nematode

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

1

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Polyphagous nematode pest already present in UK; particularly damaging to Azaleas at present; but could move into crops such as maize and forestry crops (Pinus) in the longer term. Need to raise awareness amongst relevant sectors.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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