Buddleja Sugar Plum ('Lonplum'PBR)

RHS Plant Profile
butterfly bush [Sugar Plum]

Save a plant

Where do you want to save Buddleja Sugar Plum ('Lonplum'PBR)?

Plants I own
Wishlist
Go to My Plants
butterfly bush [Sugar Plum] RHS
butterfly bush [Sugar Plum] RHS

Synonyms

Buddleja davidii 'Lonplum'PBR
Buddleja davidii 'Sugar Plum'

Plants for pollinators
Shrubs
Thank you - your purchase supports our charity work Buy this from RHS Plants Shop
Buy online from £14.99Buy this from Plant Nurseries
10 Suppliers

A compact deciduous shrub to 1.5m tall, with arching branches of grey-green, lance-shaped leaves, whitish beneath, and long panicles of rich purple-red, scented flowers, produced through summer into autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1-1.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–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)
H6
Drought Resistance
Yes

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
Bushy
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
Trade

How to Grow

Cultivation

Will perform best when grown in a sunny, well-drained situation. See buddleja cultivation for more detailed advice

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • City and courtyard gardens
  • Gravel garden
  • Flower borders and beds

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