Ammophila arenaria

RHS Plant Profile
marram grass

Other common names

European beach grass, marram, mel grass, sea matweed, sea reed, moresg

Synonyms

Ammophila arundinacea
Ammophila arenaria subsp. arundinacea
Psamma arenaria

Grass Like

A robust and vigorous native grass, found all around the coast, spreading through tough rhizomes and producing clumps of pale, greyish-green, inrolled foliage that persists all year. Leafy stems up to 1.2m tall produce compact beige flowerheads in summer. Widely planted to help consolidate drifting dunes, and a food plant for several moth caterpillars

Position

Full sun

Soil Types

Sand

Size

Time to Maturity
2–5 years

Growing Conditions

Sand
Moisture
Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed
Hardiness
H7
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Poaceae
Native to GB/Ireland
Yes
Foliage
Evergreen
Habit
Matforming, Tufted
Genus
Name Status
Correct
Plant Range
Europe

How to Grow

Cultivation

Grows mainly on sand dunes, where it can be the dominant plant. Copes with moving sand and salt wind, and thrives in well-drained soil in an open, sunny position

Propagation

Propagate by seed or by division of rhizomes

Suggested planting locations and garden types

  • Coastal
  • Low Maintenance
  • Banks and slopes

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free