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Ferocactus viridescens AGM

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© RHS 1959

Characteristics

Plant type

Cactus/Succulent, Houseplant or Conservatory/Greenhouse

Habit

Clump-forming

Resilience

Hardiness

H1c (heated greenhouse - warm temperate)

Colour

Flower

Green and Red in Summer

Stem

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

10-20 years


Preferred common name

coast barrel cactus

Family

Cactaceae


Ferocactus are spherical to columnar cacti with prominent ribs bearing spiny areoles, the spines sometimes hooked, and funnel-shaped flowers in summer

F. viridescens is a cactus with bright green, usually solitary, globose or cylindric, shallowly ribbed stems to 30cm in height; central spines yellow, curved, to 5cm in length. Flowers 5cm, green or tinged with red

Other common names

  • keg cactus

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, East-facing or North-facing
  • Sheltered

Cultivation

Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter

Soil

  • Well-drained
  • Neutral, Alkaline or Acid
  • Loam or Sand

Propagation

Propagate by seed sown at 10 - 20ÂșC in early spring

Suggested planting locations and garden types

Low Maintenance or Patio/Container Plants


How to care

Pruning

No pruning required

Pests

May be attacked by mealybugs

Diseases

Generally disease free