Overview
Lobelia speciosa 'Hadspen Purple' is a plant with a trailing, bushy habit in the genus Lobelia, part of the Campanulaceae family, with green foliage. Lobelia speciosa 'Hadspen Purple' grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H2. Suggested uses include borders, containers and hanging baskets. It is native to Ontario.
About
Lobelia speciosa 'Hadspen Purple' is a trailing, bushy cultivar of the Lobelia genus, which belongs to the Campanulaceae family. This cultivar features green foliage and thrives in full sun or partial shade, ideally in sheltered positions facing east, south, or west. It prefers moist but well-drained soils of various types, including loam, sand, chalk, and clay, and can tolerate a range of soil pH levels from acid to alkaline. Suitable for borders, containers, and hanging baskets, it is hardy to UK zone H2 and can be propagated by seed or bare root.
About the genus
Lobelia is a genus of flowering plants in the family Campanulaceae comprising 444 species, with a subcosmopolitan distribution primarily in tropical to warm temperate regions of the world, a few species extending into cooler temperate regions. They are known generally as lobelias.
Wikipedia contributors, "Lobelia", CC BY-SA 4.0 — Lobelia
Growing conditions
Best soil and position for Lobelia
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam, Sand, Chalk, Clay
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H2
Plant details
Lobelia speciosa 'Hadspen Purple' size, habit and characteristics
- Habit
- Trailing, Bushy
- Foliage
- Green
- Suggested uses
- Borders, Containers, Hanging baskets
- Native to
- Ontario
Care notes
Pruning and caring for Lobelia speciosa 'Hadspen Purple'
- Propagation
- Seed, Bare root
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Lobelia speciosa 'Hadspen Purple'?
Lobelia speciosa 'Hadspen Purple' prefers full sun and partial shade. It suits sheltered positions.
What soil does Lobelia speciosa 'Hadspen Purple' need?
Lobelia speciosa 'Hadspen Purple' is adaptable and grows happily in most soil types, including loam, sand, chalk and clay. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Lobelia speciosa 'Hadspen Purple' hardy in the UK?
Lobelia speciosa 'Hadspen Purple' has an RHS hardiness rating of H2, meaning it is tender, tolerating 1–5°C, and needs frost-free protection over winter.
How do I propagate Lobelia speciosa 'Hadspen Purple'?
Seed, Bare root.
More in the Lobelia genus
- Hypsela reniformis
- Lobelia 'Queen Victoria'Lobelia

- Lobelia syphiliticaGreat Blue Lobelia
- Lobelia syphilitica 'Blue Peter'Great Blue Lobelia
- Lobelia × vedrariensis

- Pratia pedunculata 'County Park'Blue Star Creeper
- Lobelia 'Bees' Flame'
- Lobelia 'Cherry Ripe'