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Herbaceous Perennial

Nepeta 'Chettle Blue'
  • RHS AGM
  • RHS Plants for pollinators

catmint 'Chettle Blue'

'Chettle Blue' is a bushy perennial to 75cm tall with ovate, toothed greyish-green leaves, and in summer, upright spikes of intense blue flowers with purple calcyes

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Blue Purple Green Grey Silver
Autumn Green Grey Silver
Winter
Position
  • Full sun
Aspect

West–facing or South–facing or East–facing

Exposure
Exposed or Sheltered
Drought resistance
Yes
Hardiness
H7
Botanical details
Family
Lamiaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Nepeta can be annuals or, more commonly, perennials, with paired, usually aromatic leaves, and terminal spikes or panicles of 2-lipped, tubular flowers

Name status

Accepted

How to grow

Cultivation

Grow in any well-drained soil in full sun

Propagation

Propagate by division in spring or autumn or by softwood cuttings in early summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • Gravel garden
  • Wildlife gardens
  • Flower borders and beds
Pruning

Trim in midsummer to keep plants compact and to encourage further flowering

Pests

May be damaged by slugs and snails

Diseases

May be affected by powdery mildews in dry summers

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