Buddleja saligna

RHS Plant Profile
bastard olive

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Other common names

olive buddleia

Synonyms

Chilianthus arboreus

Shrubs

Tender evergreen shrub, up to 2.5m tall with lance-shaped, olive green leaves. Clusters of honey scented, small creamy coloured flowers are produced from late summer into autumn, but only in warmer areas and it requires winter protection

Position

Full sun

Soil Types

Sand, Chalk, Loam

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Sand Chalk Loam
Moisture
Moist but well–drained or Well–drained
pH
Neutral or Alkaline or Acid

Position

Full sun
Aspect
South–facing or West–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)
H3

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Scrophulariaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Spreading branched
Genus
Buddleja can be evergreen or deciduous shrubs, occasionally trees or scrambling climbers with simple leaves and panicles of small, tubular fragrant flowers
Name Status
Correct
Plant Range
S Africa

How to Grow

Cultivation

Needs full sun, well-drained soil and a frost-fee location. Ideal for a large conservatory or greenhouse. See buddleja cultivation for more detailed advice

Propagation

Propagate by semi-ripe cuttings in summer, or by hardwood cuttings in autumn

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Mediterranean climate plants
  • Sub-tropical
  • Conservatory and greenhouse

Pruning

Pruning group 6

Pests

May be susceptible to aphids, capsid bugs, caterpillars, earwigs, figwort weevils, glasshouse red spider mite, leaf and bud eelworm, and mullein moth

Diseases

May be susceptible to honey fungus, fungal leaf spot, and virus diseases