Viola 'Mars'

RHS Plant Profile
viola 'Mars'

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viola 'Mars' visionspictures.com
viola 'Mars' visionspictures.com

Synonyms

Viola mandshurica 'Mars'

Herbaceous Perennial

A deciduous perennial, to around 20cm high, with large, broadly oval to heart-shaped green leaves with dark purple veins. Pale lavender flowers are produced in spring, amongst and sometimes before the leaves

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

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

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

Position

Full shade Full sun Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
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

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Violaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy, Clump forming
Genus
Viola can be annuals, biennials or deciduous or evergreen perennials, with simple or pinnately lobed leaves and 5-petalled flowers of characteristic shape
Name Status
Not established

How to Grow

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil; thrives in part shade, but will tolerate a range of planting positions

Propagation

Propagate by seed sown in late winter or early spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Rock garden
  • Garden edging
  • Underplanting of roses and shrubs

Pruning

Deadhead to prolong flowering unless seed is required

Pests

May be susceptible to slugs, snails, aphids, glasshouse red spider mite, violet gall midge

Diseases

May be susceptible to pansy leaf spot, powdery mildews, a rust and virus diseases