Viola palustris

RHS Plant Profile
marsh violet

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Other common names

alpine marsh violet

Herbaceous Perennial
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A species of rhizomatous, moisture-loving perennial with dark green, heart-shaped leaves and small, violet-purple flowers which appear from April to July

Position

Full sun, Partial shade

Soil Types

Clay, Chalk

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 Chalk
Moisture
Poorly–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Violaceae
Native to GB/Ireland
Yes
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
Correct

How to Grow

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade

Propagation

Propagate by seed sown in late winter or early spring

Pruning

Deadhead regularly to prolong flowering

Pests

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

Diseases

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