Glandularia canadensis 'Toronto'
rose vervain 'Toronto'
A bushy plant with bright green foliage and vivid reddish-purple flowers in dense racemes to 4.5cm in length, in summer and autumn
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
1–2 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Purple Red | Green | ||
| Autumn | Purple Red | Green | ||
| Winter |
Position
- Full sun
Aspect
West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H4Botanical details
- Family
- Verbenaceae
- Native to the UK
- 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
Get involved
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