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Alpine RockeryGrass Like

Sisyrinchium idahoense var. bellum

An evergreen perennial to 15cm tall, forming a clump of grass-like leaves. In early summer it produces small, blue flowers with a yellow eye

Synonyms

Sisyrinchium bellum hort.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Alkaline, Neutral, Acid

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing

Exposure

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: Evergreen
Habit: Tufted
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

How to grow

Cultivation

Grow in any moderately fertile, moist but well-drained soil in full sun or partial shade. May have the potential to become a nuisance as seeds prolifically

Propagation

Propagate by seed or division in spring

Suggested planting locations and garden types

Patio and container plants
Rock garden
Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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