Lupinus arboreus blue-flowered
Bushy, semi-evergreen shrub about 1.5-2m tall, with silky stems and palmate grey-green leaves composed of leaflets 6cm long. In late spring and summer produces dense racemes to 30cm long of delicately scented, pea-like blue-mauve and occasionally white bicolored flowers
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Size
Ultimate height
1.5–2.5 metresTime to ultimate height
5–10 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Grey Silver Green | |||
|---|---|---|---|---|
| Summer | Blue Purple White | Grey Silver Green | ||
| Autumn | Grey Silver Green | |||
| Winter | Grey Silver Green |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Fabaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Bushy
- Potentially harmful
- Harmful if eaten. Wear gloves and other protective equipment when handling. TOXIC to pets if eaten (dogs, cats, rabbits, tortoises) - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Lupinus can be annuals, perennials or shrubs, with palmate leaves and showy terminal racemes of pea-like flowers
- Name status
Correct
How to grow
Cultivation
Grow in light and slightly acid, well-drained or sandy soil in full sun. Ideal for warm coastal locations. See lupin cultivation
Propagation
Propagate by seed in early to mid-spring or by basal stem cuttings in mid to late spring
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Flower borders and beds
- Hedging and screens
Pruning
Deadhead to encourage a second flush of flowers
Pests
May be susceptible to lupin aphid, slugs and snails
Diseases
May be susceptible to lupin anthracnose, Powdery mildews and a virus
Get involved
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