Asparagus falcatus

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sicklethorn

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sicklethorn RHS / Joanna Kossak
sicklethorn RHS / Joanna Kossak
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A perennial with lax stems that may develop thorns, and start to twine once mature, needing support such as a moss pole. Foliage has long, narrow, glossy, dark green leaflets, and sprays of small, white, scented, star-shaped flowers are produced in summer, followed by red berries

Position

Partial shade

Soil Types

Loam

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

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

Position

Partial shade
Aspect
East–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)
H2

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asparagaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Climbing, Bushy
Potentially harmful
Skin allergenfruits harmful if eaten. Wear gloves and other protective equipment when handling
Genus
Asparagus can be evergreen or deciduous perennials or subshrubs, sometimes climbing, with tuberous rootstock. Stems bear both inconspicuous scale-like leaves and larger, leaf-like phylloclades, with small white or pinkish flowers followed by red berries
Name Status
Correct
Plant Range
Africa, Asia

How to Grow

Cultivation

Grow under glass in a peat-free, loam-based potting compost such as John Innes No.2 in bright, filtered light sheltered from hot sun. Keep frost free. Water freely from spring to mid-autumn; water more sparingly in winter. Pot on in spring. Provide support once climbing shoots develop

Propagation

Propagate by seed or by cuttings

Suggested planting locations and garden types

  • Houseplants
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to asparagus beetle, slugs and snails

Diseases

Generally disease-free