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Herbaceous Perennial

Thermopsis lanceolata

tapered false lupin

T. lanceolata is a clump-forming herbaceous perennial with light green, trifoliate leaves with soft, silvery hairs. In late spring produces upright spires of pale yellow, lupin-like flowers

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green
Summer Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or East–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Fabaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling LJD
Genus

Thermopsis are lupin-like rhizomatous herbaceous perennials with erect stems, leaves with three leaflets, and yellow or purple flowers

Name status

Correct

Plant range
Asia

How to grow

Cultivation

Grows best in light, fertile, well-drained, loamy soil, but tolerates a range of conditions. Usually long-lived, with tough roots that resent disturbance

Propagation

Propagate by seed sown in spring, moving seedlings into their final position as young as possible

Suggested planting locations and garden types
  • Cottage and informal garden
  • Flower borders and beds
Pruning

Cut down in autumn

Pests

May be susceptible to slugs and aphids

Diseases

Generally disease-free

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