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Agastache 'Blue Fortune' AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Fragrance

Leaf

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Dark Blue in Autumn and Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

giant hyssop 'Blue Fortune'

Family

Lamiaceae


Agastache are herbaceous perennials with simple, aromatic leaves and small 2-lipped tubular flowers in whorls forming dense spikes, in summer and autumn; some are rather tender but can be grown as annual bedding

'Blue Fortune' is an upright deciduous perennial forming a clump of leafy stems, with dense, interrupted spikes of small violet-blue flowers from summer to early autumn

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Exposed or Sheltered

Cultivation

Can be used as a gap-filler in herb gardens or in sunny, dry places, for example at the base of walls. Grows best in well-drained alkaline soil but will tolerate poor acid soils. Tends to be short-lived

Soil

  • Well-drained or Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by division. This cultivar is sterile

Suggested planting locations and garden types

Banks and Slopes, Cottage/Informal Garden, Flower borders and beds, Gravel Garden or Mediterranean Climate Plants


How to care

Pruning

Remove spent flowering spikes through the season

Pests

Generally pest free

Diseases

Generally disease free