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Agastache rugosa ‘Liquorice Blue’

Korean Hyssop

Garden

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Features

  • BloomsJuly to October
  • Height0.75m
  • Spread0.6m
  • Growth HabitStalked clump
  • Flower ColourDeep blue
  • Leaf ColourMid green

Description

Agastache rugosa ‘Liquorice Blue’ (Korean Hyssop). A perennial herb producing aromatic deep violet-blue spikes. Foliage is dark green and comprised of toothed, lance-shaped leaves.

Characteristics

Perennial, Deciduous, Herbaceous

Other common names

Mexican hyssop, Giant hyssop

Origin

China, Japan , USA, Mexico

Interest and use

Ornamental

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Needs

  • LightFull sun
  • HardinessFully hardy (min -15°C)
  • SoilWell drained, Fertile
  • WaterSemi-moist

Cultivation

Although it prefers well drained soils, it is more tolerant of damp conditions and heavier soils than other species. On the RHS 'Perfect for Pollinators' list.

Propagation

The plants are short-lived and should be propagated each year by softwood or semi-ripe cuttings in late summer.

Pests, diseases or disorders

Powdery mildew may effect the leaves in dry summers.

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