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sunflower 'Happy Days' | Plant Finder | Fill My Garden

Home/Plants/Perennials

Plants > Perennials

sunflower 'Happy Days'

Helianthus 'Happy Days'

★ RHS AGM

Genus: Helianthus
Family: Asteraceae

About this plant

A clump-forming herbaceous perennial to 90cm high, with rough, ovate leaves and yellow blooms with raised, anemone-like centres on strong stems in summer and early autumn

Growing Information

Height

0.5-1 Metres

Spread

0.1-0.5 Metres

Hardiness

Foliage

Deciduous

Growing Conditions

Sunlight

Full Sun

Soil

ClayChalkLoam

AlkalineNeutral

Not Currently Available

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

Moisture

Poorly Drained

Aspect

West Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Grow in a moderately fertile, humus-rich, moist but well-drained, neutral to alkaline soil in full sun. Sunflowers generally need a long hot summer to flower well. May need support

Pruning

Cut back after flowering

Propagation

Propagate by seed sown in spring, or by division of established clumps in spring or autumn

Pests

May be susceptible to slugs

Diseases

May be susceptible to powdery mildews and sclerotinia diseases

Garden Uses

Uses

Cottage InformalGround Cover

Planting Places

IndoorOutdoorWall Trained

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

0.5-1 Metres

Spread

0.1-0.5 Metres

Habit

Bushy

Time to Full Height

Two To Five Years