Ferocactus gracilis

RHS Plant Profile
fire barrel cactus

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Cactus Succulent

A globular, ribbed cactus becoming cylindrical to 70cm tall with age. The stem is dark green and bears fine, white radial spines and pink to reddish-brown, flattened central spines. In early summer it produces funnel-shaped red flowers

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
5–10 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–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)
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Cactaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Genus
Ferocactus are spherical to columnar cacti with prominent ribs bearing spiny areoles, the spines sometimes hooked, and funnel-shaped flowers in summer
Name Status
Correct
Plant Range
Mexico

How to Grow

Cultivation

Grow in cactus compost in a sunny position. Water moderately during the growing season and keep almost dry in winter. See houseplant cacti and succulent cultivation for further information

Propagation

Propagate by seed sown at 21°C in spring

Suggested planting locations and garden types

  • Houseplants
  • Patio and container plants
  • Low Maintenance
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to mealybugs

Diseases

May be susceptible to stem and root rots if overwatered