Mentha cervina

RHS Plant Profile
hart's pennyroyal
hart's pennyroyal RHS

Synonyms

Preslia cervina
Mentha cervina preslia

Bogs Herbaceous Perennial

A clump-forming, semi-evergreenperennial to 30cm tall with slender, lance-shaped, aromatic leaves and whorls of pale blue to lilac flowers from midsummer into autumn

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Clay Loam
Moisture
Poorly–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or North–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H7

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Bushy
Genus
Mentha are aromatic, rhizomatous perennials with opposite, toothed leaves and small tubular flowers in spikes of whorls in summer
Name Status
Correct
Plant Range
SW Europe

How to Grow

Cultivation

Grow in permanently moist soil, or in water up to 10cm deep, in sun or semi-shade. May have to potential to become a nuisance if not managed well

Propagation

Propagate by division in spring

Suggested planting locations and garden types

  • Wildlife gardens

Pruning

Cut back after flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews and mint rust