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Herbaceous Perennial

Sisyrinchium striatum

pale yellow-eyed grass

A clump-forming perennial, to 80cm tall, with fans of grey-green, narrow, linear to lance-shaped leaves. In summer, stiff, upright stems carry clusters of pale yellow, star-shaped flowers along their length

Other common names

yellow Mexican satin flower

Synonyms

Phaiophleps nigricans

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or East–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Iridaceae
Native to GB / Ireland: No
Foliage: Semi evergreen
Habit: Bushy
Genus: Sisyrinchium can be annuals or rhizomatous perennials forming a clump of narrowly sword-shaped leaves with erect stems carrying solitary or clustered, star-shaped or bell-shaped flowers in spring or summer
Name status: Correct
Plant range: Argentina, Chile

How to grow

Cultivation

Grows best in sun in a well-drained, moist soil. Dislikes wet winters and excessively cold temperatures. May have the potential to become a nuisance as seeds prolifically

Propagation

Propagate by seed or by division

Suggested planting locations and garden types

City and courtyard gardens
Gravel garden
Cottage and informal garden
Flower borders and beds

Pruning

Remove old, blackened foliage after flowering

Pests

Generally pest-free

Diseases

Generally disease-free

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