Armeria caespitosa 'Alba'

RHS Plant Profile

white juniper-leaved thrift

RHS

Synonyms

Armeria juniperifolia misapplied 'Alba'

Alpine Rockery Herbaceous Perennial

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A compact, evergreen, mat-forming perennial to 8cm high and 15cm wide. The neat tufts of needle-like, grey-green leaves are topped with tiny white flowers in spring

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 0.1-0.5 metres
Max Height: Up to 10 cm

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: East–facing or South–facing
Exposure: Exposed
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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Plumbaginaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Matforming
Genus: Armeria are evergreen perennials forming tufts or mats of strap-shaped or linear leaves, with long-stalked, dense clusters of small cup-shaped flowers
Name Status: Unresolved

How to Grow

Cultivation

Grow in well-drained, poor to moderately fertile soil in an open situation in full sun

Propagation

Propagate by division in early spring or after flowering

Suggested planting locations and garden types

Wildflower meadow
Wildlife gardens
City and courtyard gardens
Cottage and informal garden
Gravel garden
Flower borders and beds
Garden edging
Ground cover

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free