Lupinus polyphyllus 'Pink Pearls' (Garden Lupin) — Perennial

Overview

Lupinus polyphyllus 'Pink Pearls' is a perennial in the genus Lupinus, part of the Fabaceae family. It typically grows around 1.5 m tall. Lupinus polyphyllus 'Pink Pearls' grows best in full sun, and tolerates most soils. Its UK hardiness is rated H7. Suggested uses include borders, cottage gardens and cut flowers. It is native to Western North America.

About the genus

Lupinus, commonly known as lupin, lupine, or regionally bluebonnet, is a genus of plants in the legume family Fabaceae. The genus includes over 199 species, with centres of diversity in North and South America. Smaller centres occur in North Africa and the Mediterranean.

Wikipedia contributors, "Lupinus", CC BY-SA 4.0 — Lupinus

In the garden

Lupinus polyphyllus 'Pink Pearls' is a perennial member of the lupin genus that bears tall, upright flower spikes to around 1.5 m. The species originates in western North America and garden-bred forms of L. polyphyllus are commonly grown for summer flower displays. Choose a site in full sun and a soil that is sandy, loamy or clay, taking care that conditions remain moist but well drained. In the UK it carries an H7 rating, meaning it is fully hardy across the country; the cultivar also sits within USDA zones 5–9 for broader reference. Position plants so their height does not overshadow lower neighbours and so the flower spikes receive a long period of direct sun during the day. Flowering runs from June to August, providing a clear midsummer display. Allow space for the 1.5 m stems in mixed borders or cottage-style beds where vertical form is useful, or grow specifically for cut blooms. Height and flowering timing make Lupinus polyphyllus 'Pink Pearls' particularly effective in the middle to back of a border and as a source of summer cutting stems.

Growing conditions

Best soil and position for Lupinus

Sunlight: Full sun
Soil type: Sandy, Loamy, Clay
Soil moisture: Moist but well-drained
Exposure: Full sun
UK hardiness: H7

Plant details

Lupinus polyphyllus 'Pink Pearls' size, habit and characteristics

Plant type: Perennial
Height: 1.5 m
Suggested uses: Borders, Cottage gardens, Cut flowers
Native to: Western North America

Care notes

Pruning and caring for Lupinus polyphyllus 'Pink Pearls'

Cultivation: Prefers moist, well-drained soil; avoid waterlogging; mulch to retain moisture; supports nitrogen fixation
Pruning: Deadhead spent flowers to encourage more blooms; cut back after flowering to promote bushier growth
Propagation: Seed, Division

Frequently asked questions

How do I grow Lupinus polyphyllus 'Pink Pearls'?

Prefers moist, well-drained soil; avoid waterlogging; mulch to retain moisture; supports nitrogen fixation.

Where is the best place to plant Lupinus polyphyllus 'Pink Pearls'?

Lupinus polyphyllus 'Pink Pearls' prefers full sun. It suits full sun positions.

What soil does Lupinus polyphyllus 'Pink Pearls' need?

Lupinus polyphyllus 'Pink Pearls' is adaptable and grows happily in most soil types, including sandy, loamy and clay. Aim for soil that stays moist but well-drained.

How do I prune Lupinus polyphyllus 'Pink Pearls'?

Deadhead spent flowers to encourage more blooms; cut back after flowering to promote bushier growth.

How big does Lupinus polyphyllus 'Pink Pearls' grow?

Lupinus polyphyllus 'Pink Pearls' reaches a height of 1.5 m.

Is Lupinus polyphyllus 'Pink Pearls' hardy in the UK?

Lupinus polyphyllus 'Pink Pearls' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.