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Carex morrowii 'Irish Green' (Japanese sedge 'Irish Green')

Other names: Morrow's sedge 'Irish Green'

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Variety or Cultivar
'Irish Green' is a tufted, evergreen to semi-evergreen perennial bearing linear, leathery, upright to arching, mid- to bright green leaves and inconspicuous, pale brown flower spikelets in summer.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.5 m 0.5 m 2-5 years
1 ft 1 ft 2-5 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Moisture-retentive
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Shade
Aspect
  • East
  • West
  • South
  • North
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

Grow in humus-rich, moist, preferably loamy soil in partial shade. Tolerates full shade. Will tolerate full sun in cool climates. Leaves may turn yellow in hot climates if planted in full sun.

Suggested uses

Containers/Patio, Beds and borders, Cottage/Informal, City, Low Maintenance, Prairie planting

UK hardiness

H7

USDA zones

Zone 5, Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 3

WUCOLS

North-Central Coastal = Moderate/Medium
Central Valley = Moderate/Medium
South Coastal = Moderate/Medium
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Evergreen

Habit

Upright, Clump-forming, Arching

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Toxicity

Not toxic

Plant care

Pruning

Cut out any faded or dead leaves in summer.

Propagation methods

Seed, Division

Propagation

Divide in early summer. Sow seed in a cold frame in spring.

Pests

Aphids

Diseases

Plant container grown plants in deep fertile, well-drained soil

Divide and replant in spring

Protect in winter with dry mulch (in cold areas)

Check for waterlogging during winter (optional)

Plant container grown plants in a sunny postion

Plant in full sun or partial shade (autumn or spring)

Sow seeds in a cold frame in spring

Other plants

Plants in this Genus (113)

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Carex testacea 'Prairie Fire'
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Carex comans red-leaved
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Carex comans red-leaved Red New Zealand hair sedge
Carex buchananii 'Viridis'
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Carex buchananii 'Viridis' Leatherleaf sedge 'Viridis'
Carex panicea
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Carex panicea Carnation sedge
Carex siderosticha 'Variegata'
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Carex siderosticha 'Variegata' Variegated creeping broad-leaved sedge
Carex pseudocyperus
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Carex pseudocyperus Cyperus sedge
Carex acutiformis
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Carex acutiformis Swamp sedge
Carex oshimensis 'Everest'
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Carex oshimensis 'Everest' Sedge 'Everest'
Carex tenuiculmis
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Carex tenuiculmis New Zealand hair sedge
Carex dipsacea 'Dark Horse'
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Carex dipsacea 'Dark Horse' Green sedge 'Dark Horse'
Carex lurida
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Carex lurida Sallow sedge
Carex morrowii 'Fisher's Form'
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Carex morrowii 'Fisher's Form' Japanese sedge 'Fisher's Form'
Carex testacea 'Old Gold'
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Carex testacea 'Old Gold' New Zealand sedge 'Old Gold'
Carex caryophyllea 'The Beatles'
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Carex caryophyllea 'The Beatles' Mop head sedge 'The Beatles'
Carex conica 'Snowline'
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Carex conica 'Snowline' Miniature variegated sedge
Carex muskingumensis
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Carex muskingumensis Palm branch sedge
Carex praegracilis
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Carex praegracilis Clustered field sedge
Carex comans bronze-leaved
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Carex comans bronze-leaved Bronze New Zealand hair sedge
Carex 'Milk Chocolate'
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Carex 'Milk Chocolate' Sedge 'Milk Chocolate'
Carex comans 'Frosted Curls'
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Carex comans 'Frosted Curls' New Zealand sedge 'Frosted Curls'
Carex morrowii
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Carex morrowii Japanese sedge
Carex brunnea 'Variegata'
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Carex brunnea 'Variegata' Variegated sedge
Carex buchananii
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Carex buchananii Leatherleaf Sedge
Carex comans
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Carex comans Bronze New Zealand hair sedge
Carex elata 'Aurea'
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Carex elata 'Aurea' Bowles' golden sedge
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Companion plants (0)

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