Glandularia canadensis 'Toronto'

RHS Plant Profile
rose vervain 'Toronto'
rose vervain 'Toronto' RHS 1999

Other common names

vervain 'Toronto'

Synonyms

Verbena canadensis 'Toronto'

Annual Biennial Bedding

A bushy plant with bright green foliage and vivid reddish-purple flowers in dense racemes to 4.5cm in length, in summer and autumn

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Verbenaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Glandularia are annuals or herbaceous perennials, native to The Americas and closely-related to Verbena (and included within Verbena until recently). Showy flowers typically have 5 petals and are held in rounded clusters in summer and autumn
Name Status
Accepted

How to Grow

Cultivation

Grow in moderately fertile, moist but well-drained soil in full sun

Propagation

Propagate by seed sown in early spring at 18-21°C

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • City and courtyard gardens
  • Coastal
  • Banks and slopes
  • Flower borders and beds
  • Garden edging

Pruning

Cut back after flowering

Pests

Damage by slugs may be a problem

Diseases

Susceptible to powdery mildews