• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Lonicera sempervirens

trumpet honeysuckle

trumpet honeysuckle

© RHS 1993

  • Other common names trumpet honeysuckle
    coral honeysuckle

  • Family Caprifoliaceae

  • 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

  • Details L. sempervirens is a medium-sized, twining evergreen climber with blue-green leaves, the uppermost perfoliate. Flowers to 5cm in length, orange-red outside, yellow within, followed by red berries

  • Plant range E & S USA

Characteristics

  • Foliage Evergreen

  • Habit Climbing

  • Fragrance Flower

  • 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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or East-facing or North-facing

  • Exposure Sheltered or Exposed

Soil

  • Chalk

    Sand

  • Chalk

    Clay

  • Chalk

    Chalk

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    2.5-4 metres

  • Ultimate spread

    0.5-1 metres

  • Time to ultimate height

    5-10 years

How to grow

Cultivation Vigorous honeysuckle best in partial shade but tolerates full sun, thrives in any moist but well-drained soil

Propagation Propagate by layering, hardwood cuttings or semi-hardwood cuttings

Suggested planting locations and garden types Flower borders and beds Low Maintenance Wall-side Borders City & Courtyard Gardens Coastal Cottage & Informal Garden

How to care

Pruning Pruning group 11 after flowering

Pests May be attacked by aphids

Diseases Generally disease free

Advertise here

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now