Helichrysum petiolare

RHS Plant Profile
liquorice plant

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liquorice plant RHS 1989

Synonyms

Helichrysum 'Petiolatum Silver'
Helichrysum petiolatum misapplied
Helichrysum petiolatum silver-leaved

Award of Garden Merit
Bedding Herbaceous Perennial
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A trailing sub-shrub to 45cm in height, with white stems bearing broadly ovate, grey-hairy, evergreen leaves, and small dull white flowerheads on erect stems in late summer and autumn

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
1–2 years
Max Spread
1-1.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun
Aspect
South–facing or East–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)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Trailing
Genus
Helichrysum can be annuals, herbaceous or evergreen perennials or shrubs, usually with grey-hairy foliage and papery everlasting flower-heads
Name Status
Correct
Plant Range
Southern Africa

How to Grow

Cultivation

Grow in moderately fertile, well-drained soil in full sun. Water in prolonged dry spells

Propagation

Take softwood cuttings from the ends of non-flowering shoots in late summer or softwood cuttings in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Mediterranean climate plants
  • City and courtyard gardens
  • Coastal
  • Patio and container plants
  • Flower borders and beds

Pruning

Trim as required

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility. May also be susceptible to downy mildews and powdery mildews