Nepeta 'Leeds Castle'

RHS Plant Profile

catmint 'Leeds Castle'

Synonyms

Nepeta longipes hort.

Herbaceous Perennial

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'Leeds Castle' is a bushy perennial with softly hairy, aromatic,grey-green leaves, producing spires of pale lilac flowers from late spring to midsummer

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

Chalk Clay Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: West–facing or South–facing or East–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
Drought Resistance: Yes

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
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 or partial shade

Propagation

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

Suggested planting locations and garden types

Coastal
Gravel garden
Wildlife gardens
Cottage and informal garden
Flower borders and beds

Pruning

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

Pests

May be susceptible to leafhoppers

Diseases

May be susceptible to powdery mildews