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Verbena 'Lawrence Johnston' (G)

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© RHS

Characteristics

Plant type

Bedding or Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Red in Autumn and Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

vervain 'Lawrence Johnston'

Family

Verbenaceae


Verbena can be annuals, perennials or sub-shrubs, with toothed or pinnately lobed leaves and small salver-shaped flowers in spikes, panicles or corymbs in summer or autumn

Verbena (G) are species which are separated in the genus Glandularia by some botanists

'Lawrence Johnston' is a spreading half-hardy perennial to 45cm tall, with toothed, ovate leaves and flat clusters of bright red flowers 1cm across in summer and early autumn

How to grow

Sunlight

  • Full sun

Aspect

  • West-facing or South-facing
  • Sheltered

Cultivation

In borders plant in well drained soil and full sun. In containers best grown in loam based compost such as John Innes No. 2 with added sharp sand alternatively use multipurpose compost with added sharp sand

Soil

  • Well-drained or Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Loam or Chalk

Propagation

Take semi-ripe stem-tip cuttings in late summer

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Garden Edging or Patio/Container Plants


How to care

Pruning

Deadheading is beneficial

Pests

Aphids, thrips and leafhoppers may be troublesome

Diseases

Susceptible to powdery mildew