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cup plant | Plant Finder | Fill My Garden

Home/Plants/Perennials

Plants > Perennials

cup plant

Silphium perfoliatum

★ RHS AGMFragrant

Genus: Silphium
Family: Asteraceae
Common Names: cup rosin weed, Indian cup

About this plant

S. perfoliatum is an upright perennial to 2.5m tall, with paired, oval leaves joined around the stem, and branched sprays of bright yellow daisies 7-9cm wide, opening in late summer

Growing Information

Height

1.5-2.5 Metres

Spread

0.5-1 Metres

Hardiness

Foliage

Deciduous

Growing Conditions

Sunlight

Full SunPartial Shade

Soil

Loam

AcidAlkalineNeutral

Not Currently Available

This plant is not currently stocked at any garden centres on our platform.

Moisture

Poorly DrainedWell Drained

Aspect

East FacingWest Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

An impressive plant suitable for the back of a border. It performs best when grown in full sun; in partial shady, or windy, sites it may require staking

Pruning

Cut back after flowering; stems may optionally be left until shortly before new growth begins the following season

Propagation

Propagate by seed or division

Pests

Generally trouble free

Diseases

Generally trouble free

Garden Uses

Uses

City CourtyardGround Cover

Planting Places

Outdoor

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

1.5-2.5 Metres

Spread

0.5-1 Metres

Habit

Bushy

Time to Full Height

Five To Ten Years