Plants > Annuals & Biennials

St John's wort 'Citrinum'

Hypericum olympicum f. uniflorum 'Citrinum'

★ RHS AGM

Genus: Hypericum
Family: Hypericaceae

About this plant

'Citrinum' is a deciduous dwarf shrub with upright stems bearing small, ovate, grey-green leaves, and small terminal clusters of pale lemon-yellow flowers to 3.5cm wide in summer

Growing Information

Height

0.1-0.5 Metres

Spread

0.1-0.5 Metres

Hardiness

H4

Foliage

Deciduous

Growing Conditions

Sunlight

Full SunPartial Shade

Soil

ClayChalkLoamSandy

pH

Acid

Not Currently Available

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

Alkaline

Neutral

Moisture

Poorly DrainedWell Drained

Aspect

West FacingSouth FacingEast Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Grows well in moderately fertile, moist but well-drained soil full sun. It will tolerate partial shade. Ideal for a rock garden.

Pruning

Pruning group 1 or pruning group 6

Propagation

Propagate by softwood cutting or semi-ripe cuttings from late spring to early summer.

Pests

Generally pest free

Diseases

Generally disease free

Garden Uses

Uses

Ground CoverHedging ScreensPatio ContainerWall Side BordersCottage Informal

Planting Places

Conservatory

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

0.1-0.5 Metres

Spread

0.1-0.5 Metres

Habit

Bushy

Time to Full Height

Five To Ten Years