Plants > Houseplants

giant herb robert

Geranium maderense

★ RHS AGMPollinator FriendlyLow Maintenance

Genus: Geranium
Family: Geraniaceae

About this plant

G. maderense is a robust but short-lived evergreen perennial or biennial to 1.5m, with attractively dissected leaves to 20cm in length and large panicles of purplish-pink flowers 4cm across, with darker centres

Growing Information

Height

1-1.5 Metres

Spread

0.5-1 Metres

Hardiness

H3

Foliage

Evergreen

Growing Conditions

Sunlight

Full ShadeFull SunPartial Shade

Soil

ClayChalkLoamSandy

pH

Not Currently Available

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

Acid

Alkaline

Neutral

Moisture

Well Drained

Aspect

South FacingWest FacingNorth FacingEast Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Grow outdoors in well-drained soil in either sun or shade in frost-free area. Grow under glass in loam-based compost with added sharp sand in bright filtered light. Remove flowered stems and old leaves to encourage the production of new leaves and flowers

Pruning

No pruning required

Propagation

Propagate by seed, division or take basal cuttings

Pests

Generally pest free

Diseases

May be affected by a downy mildew and powdery mildews

Garden Uses

Uses

Ground CoverLow Maintenance

Season of Interest

SpringSummerAutumnWinter

Size & Characteristics

Height

1-1.5 Metres

Spread

0.5-1 Metres

Habit

Floating

Time to Full Height

Two To Five Years