Santolina pinnata subsp. neapolitana 'Sulphurea'

RHS Plant Profile

rosemary-leaved lavender cotton 'Sulphurea'

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Synonyms

Santolina neapolitana Jord. 'Sulphurea'
Santolina pinnata 'Sulphurea'

Shrubs

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A compact, dense shrub to around 75cm high with grey-green, deeply cut, aromatic leaves and pale to mid-yellow flowerheads borne above the foliage in summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 5–10 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained or Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: West–facing or South–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): H5
Drought Resistance: Yes

Colour & Scent

Fragrance Foliage

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asteraceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Santolina are aromatic, dwarf evergreen shrubs with entire or pinnately dissected leaves and dense, button-like flower-heads in summer
Name Status: Accepted

How to Grow

Cultivation

Thrives in hot, sunny, well-drained sites

Propagation

Propagate by semi-ripe cuttings in late summer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Gravel garden
Rock garden
Patio and container plants
Coastal
Mediterranean climate plants
Garden edging

Pruning

Pruning group 10

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility