Echinops sphaerocephalus 'Arctic Glow'

RHS Plant Profile

globe thistle 'Arctic Glow'

Synonyms

Echinops bannaticus 'Arctic Glow'
Echinops 'Arctic Glow'
Echinops ritro 'Arctic Glow'

Herbaceous Perennial

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A vigorous perennial with strudy, branching stems to 1m tall, which are green but appear as a rich brown, and spiny, deeply divided green leaves. Globose white flower-heads appear in late summer to early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

Aspect: South–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): H7
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asteraceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Echinops can be annuals, biennials or perennials with simple or pinnately lobed, spiny leaves and spherical blue or whitish flower-heads
Name Status: Accepted

How to Grow

Cultivation

A hot position with full sun in well-drained soil is best but tolerant of almost any soil or situation except deep shade

Propagation

By division in spring or by root cuttings in the dormant season. Propagate by seed in mid-spring as this cultivar will come true from seed

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Wildlife gardens
Flower borders and beds

Pruning

Cut down winter damaged stems to the base in early spring

Pests

May be susceptible to aphids

Diseases

Generally disease-free