Calamintha ascendens

RHS Plant Profile
basil thyme

Other common names

cat mint, common calamint, cup mint, medicinal calamint

Synonyms

Clinopodium ascendens
Calamintha officinalis misapplied
Calamintha menthifolia ascendens
Calamintha sylvatica subsp. ascendens

Herbaceous Perennial

A perennial herb that reaches up to 60cm in height with a spread to 50cm, with a bushy habit and square stems emerging from the base. The leaves are greyish-green, oval-shaped with blunt tips, measuring up to 4cm in length. They have shallow, rounded teeth along the edges and a slightly hairy texture. From July to September, it produces pale pinkish or bluish tubular flowers with spots on the white lower lip. The flowers are about 1.5cm long and are arranged in whorls around the stem. Both the leaves and flowers emit a minty aroma

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
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5

Colour & Scent

Fragrance Flower Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Bushy
Genus
Calamintha are pleasantly aromatic perennials with ovate leaves and loose clusters of small, 2-lipped flowers in summer and autumn in the axils of the upper leaves
Name Status
Correct
Plant Range
W & SC Europe to Ukraine & W Turkey

How to Grow

Cultivation

Grow in moist but well drained soil in sun or partial shade. See Creating wildflower meadows for further advice

Propagation

Propagate by sowing seeds outdoors or in a cold frame. Divide in spring

Suggested planting locations and garden types

  • Wildflower meadow
  • Wildlife gardens

Pruning

For more information see our page on cutting back herbaceous perennials

Pests

Generally pest-free

Diseases

Generally disease-free, but may be susceptible to powdery mildews