Lobelia × speciosa 'Hadspen Purple'PBR
lobelia 'Hadspen Purple'
A semi-evergreen perennial, up to 60cm in height, with upright stems bearing ovate to lance-shaped, purple-flushed, light green leaves. Terminal racemes of two-lipped, bright purple flowers appear from summer into autumn
Synonyms
Lobelia syphilitica 'Hadspen Purple'Lobelia 'Hadspen Royal Purple'
see moreLobelia 'Hadspen Purple'
Lobelia × gerardii 'Hadspen Purple'
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | ||||
|---|---|---|---|---|
| Summer | Green Purple | Green Purple | ||
| Autumn | Green Purple | Green Purple | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H5Botanical details
- Family
- Campanulaceae
- Native to GB / Ireland
- No
- Foliage
- Semi evergreen
- Habit
- Columnar upright
- Potentially harmful
- Harmful if eaten, skin irritant. Wear gloves and other protective equipment when handling Wear gloves and other protective equipment when handling. Pets: Harmful if eaten, skin irritant. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
- Genus
Lobelia can be annuals, perennials or shrubs, with simple leaves and showy 2-lipped flowers that may be solitary or in racemes or panicles
- Name status
Accepted
How to grow
Cultivation
Plant in deep, fertile, reliably moist soil in sun or partial shade. Feed every 2 weeks with a balanced liquid fertilizer until midsummer and a low nitrogen fertilizer for the remainder of the growing season. Protect the crown of the plant during winter with a thick, dry mulch
Propagation
Divide large clumps of plants every second year in spring
Suggested planting locations and garden types
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Wildlife gardens
- Low Maintenance
- Flower borders and beds
- Garden edging
- Wall side borders
Pruning
Cut down faded flower spikes in autumn
Pests
May be susceptible to slugs
Diseases
May be susceptible to crown rot
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.