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Herbaceous Perennial

Nepeta tuberosa

A clump-forming perennial, up to around 70cm high, with upright stems and narrow, woolly grey-green leaves. Dense spikes of violet blue flowers are produced throughout the summer

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 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

South–facing or West–facing

Exposure
Exposed or Sheltered
Drought resistance
Yes
Hardiness
H3
Botanical details
Family
Lamiaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
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

Correct

Plant range
S Europe

How to grow

Cultivation

Thrives in a warm, sunny spot in gritty, well-drained soil. May need winter protection

Propagation

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

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Mediterranean climate plants
  • Rock garden
  • Wildlife gardens
  • Flower borders and beds
  • Wall side borders
Pruning

Trim after flowering to keep plants compact and to encourage a second flowering

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to powdery mildews in dry summers

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