Lonicera periclymenum 'Graham Thomas'

RHS Plant Profile

honeysuckle 'Graham Thomas'

Synonyms

Lonicera 'Graham Thomas'

Climber Wall Shrub

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A large twining deciduous climber with oval, dark green leaves whitish beneath and terminal clusters of fragrant white flowers which soon turn to buff-yellow. Berries red. Long flowering season

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1-1.5 metres
Max Height: 4-8 metres

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: North–facing or West–facing or South–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

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Caprifoliaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Climbing
Potentially harmful: Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Lonicera can be deciduous and evergreen shrubs, or climbers with twining stems. The tubular or two-lipped flowers, often very fragrant, are followed by red or black berries
Name Status: Accepted

How to Grow

Cultivation

Honeysuckle grows best in partial shade but tolerates full sun, and thrives in any fertile, moist but well-drained soil. See Honeysuckle (Climbing) cultivation

Propagation

Propagate by layering, hardwood cuttings or semi-hardwood cuttings

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Wildlife gardens
Climber and wall shrubs
Wall side borders

Pruning

Pruning group 11 after flowering

Pests

May be susceptible to honeysuckle aphids, Thrips and glasshouse whitefly

Diseases

May be susceptible to powdery mildews, fungal leaf spot, silver leaf and honey fungus (rarely)