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Ferocactus glaucescens
  • RHS AGM

glaucous barrel cactus

F. glaucescens is a cactus with a globose to cylindric, grey-green stem to 60cm in height, sometimes clustered; with yellow spines to 2.5cm in length, and funnel-shaped yellow flowers 3-4cm across

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
10–20 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Green Grey Silver Yellow
Autumn Green Grey Silver
Winter Green Grey Silver
Position
  • Full sun
Aspect

South–facing or East–facing or North–facing

Exposure
Sheltered
Hardiness
H2
Botanical details
Family
Cactaceae
Native to the UK
No
Foliage
Evergreen
Habit
Clump forming
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
E Mexico

How to grow

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

Propagation

Propagate by seed sown at 10 - 20°C in early spring

Suggested planting locations and garden types
  • Patio and container plants
  • Low Maintenance
Pruning

No pruning required

Pests

May be attacked by mealybugs

Diseases

Generally disease free

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