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showy sunflower | Plant Finder | Fill My Garden

Home/Plants/Perennials

Plants > Perennials

showy sunflower

Helianthus × laetiflorus

Pollinator Friendly

Genus: Helianthus
Family: Asteraceae
Common Names: perennial sunflower, prairie sunflower, rough-leaved sunflower, stiff sunflower

About this plant

Helianthus x laetiflorus is a rhizomatous, clump-forming perennial to 2m tall with dark green, narrowly-ovate and toothed leaves. Bright yellow flowerheads with dark centres,10-12cm in diameter,are borne from late summer into autumn

Growing Information

Height

1.5-2.5 Metres

Spread

1-1.5 Metres

Hardiness

Foliage

Deciduous

Growing Conditions

Sunlight

Full Sun

Soil

ClayLoamSandy

AlkalineNeutral

Not Currently Available

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

Moisture

Poorly Drained

Aspect

West FacingEast FacingSouth Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Requires a moderately fertile, moist but well-drained, alkaline to neutral soil in full sun

Pruning

Cut back old stems after flowering as they die down for the winter

Propagation

Propagate by seed in the spring. Divide established clumps every 2-4 years to both increase plants and retain vigour

Pests

Susceptible to slugs

Diseases

Powdery mildews and sclerotinia diseases may be a problem

Garden Uses

Uses

Cottage InformalFlower BordersGround Cover

Planting Places

IndoorOutdoor

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

1.5-2.5 Metres

Spread

1-1.5 Metres

Habit

Bushy

Time to Full Height

Five To Ten Years