Sorbus borbasii

RHS Plant Profile

Borbas's rowan

RHS

Trees

A large shrub or small tree 7-10m high, with a dense bushy habit, simple glossy green leaves, lobed towards the base, and dense clusters of white flowers in spring, followed by coral-red fruits which ripen in early summer but may then remain on the tree until midwinter

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

8-12 metres

Max Spread

2.5-4 metres

Size

Time to Maturity: 20–50 years
Max Spread: 2.5-4 metres
Max Height: 8-12 metres

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: South–facing or North–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

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Rosaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Potentially harmful: Fruit are ornamentalnot to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamentalnot to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Sorbus can be deciduous trees or shrubs with simple or pinnate leaves and clusters of small white or pink flowers, followed by white, yellow, pink, red or brown berries; some have fine autumn colour
Name Status: Correct
Plant Range: Romania

How to Grow

Cultivation

Grow in moisture-retentive, humus-rich, well-drained soil in sun or light dappled shade; can be grown as a hedge

Propagation

Propagate by seed

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Low Maintenance
Hedging and screens

Pruning

Minimal pruning required, see pruning group 1

Pests

May be susceptible to aphids, scale insects, pear blister mite, red spider mite and sawfly larvae

Diseases

May be susceptible to fireblight, apple canker, silver leaf and honey fungus