Coronilla valentina subsp. glauca 'Citrina'

RHS Plant Profile
bastard senna 'Citrina'

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bastard senna 'Citrina' RHS
bastard senna 'Citrina' RHS
bastard senna 'Citrina' RHS 2002

Synonyms

Coronilla valentina 'Sulphurea'
Coronilla valentina 'Citrinus'
Coronilla glauca 'Citrina'

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Shrubs
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A small evergreen shrub with blue-grey, pinnate leaves and heads of small, fragrant, lemon-yellow flowers in late winter and early spring

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
10–20 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or 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)
H4
Drought Resistance
Yes

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Fabaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Coronilla can be annuals, herbaceous perennials or deciduous or evergreen shrubs, with pinnate leaves and often scented, pea-like flowers in compact umbels in the leaf axils
Name Status
Accepted

How to Grow

Cultivation

Will grow happily in a range of sunny, sheltered habitats

Propagation

Propagate by seed or semi-hardwood cuttings

Suggested planting locations and garden types

  • Wall side borders

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus