Fagus sylvatica 'Rohan Obelisk'

RHS Plant Profile

beech 'Rohan Obelisk'

Synonyms

Fagus sylvatica 'Red Obelisk'

Trees

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Narrow, columnar tree about 10m in height, with red-purple, irregularly and variably lobed leaves that colour bronze-purple in autumn

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

8-12 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 10–20 years
Max Spread: 1.5-2.5 metres
Max Height: 8-12 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: South–facing or West–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: Fagaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Potentially harmful: Pets (dogs): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Fagus are large deciduous trees with smooth grey bark, ovate leaves colouring well in autumn, and inconspicuous flowers followed by usually spiny fruits
Name Status: Accepted

How to Grow

Cultivation

Tolerant of a range of soils including chalk, grow in full sun or partial shade. For best colour, position in full sun. For more information see beech cultivation

Propagation

Propagate by grafting

Suggested planting locations and garden types

Architectural
Cottage and informal garden
Wildlife gardens

Pruning

Pruning group 1

Pests

May be susceptible to aphids and beech bark scale

Diseases

May be susceptible to beech bark disease, fungi (particulary bracket fungi) and powdery mildews. Sometimes susceptible to honey fungus