Nepeta transcaucasica

RHS Plant Profile
transcaucasian catmint

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transcaucasian catmint RHS
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Herbaceous Perennial
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A bushy, clump-forming deciduous perennial with aromatic grey-green foliage and upright spikes of violet-blue flowers which are produced from summer through until the autumn. A hardy variety that is also attractive to cats

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy, Clump forming
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
Caucasus

How to Grow

Cultivation

Grow in any well-drained soil in full sun or partial shade

Propagation

Propagate by softwood cuttings in early summer or semi-ripe cuttings in early autumn or by division

Suggested planting locations and garden types

  • Cottage and informal garden
  • Mediterranean climate plants
  • Wildlife gardens
  • Coastal
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

Trim after flowering to keep plants compact

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to powdery mildews in dry summer