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Alpine Rockery

Saxifraga 'Sulphurea' (× _boydii_) (7)

An evergreen perennial forming a slightly domed, low mound of rosettes of tiny, greyish-green leaves. Short red stems bear upturned, pale yellow flowers in spring

Synonyms

Saxifraga 'Moonlight' (× _boydii_)
Saxifraga × boydii 'Sulphurea'
see moreSaxifraga burseriana 'Sulphurea'
Saxifraga 'Sulphurea'

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0–0.1 metre

Chalk

Loam

Sand

Moisture

Well–drained, Moist but well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

West–facing or North–facing or East–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: Saxifragaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Matforming
Genus: Saxifraga can be annuals, biennials, evergreen or herbaceous perennials, mostly mat-forming in habit, with simple or palmately lobed leaves and starry or rounded flowers which may be solitary of in panicles or cymes
Name status: Accepted
Horticultural Group: Porphyrion section saxifrages are compact, cushion or mat-forming evergreen perennials with small, usually lime-encrusted leaves, and 5-petalled white, yellow or pink flowers in early summer

How to grow

Cultivation

Grow in any moist but well-drained, neutral to alkaline soil in light shade

Propagation

Propagate by detaching individual rosettes and rooting as cuttings

Suggested planting locations and garden types

Gravel garden
Patio and container plants
Rock garden
Low Maintenance

Pruning

No pruning required

Pests

May be susceptible to aphids, slugs, vine weevil, and glasshouse red spider mite

Diseases

Generally disease-free

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