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Sea-urchin cactus in the GardenTags plant encyclopedia

Coryphantha cornifera subsp. radians

 

Sea-urchin cactus

This is a very variable species, normally solitary, rarely sprouting. Its stem is flat globose to cylindrical, up to 8-15 cm in diameter, 6-12 cm tall, dull olive-green, apex depressed, with a blunt, depressed apex covered with wool. Most of the plants develop the central spines only at the age of 7 to 15 years.They are very adaptable houseplants and will thrive in a range of indoor conditions.

Contributed by @Putzy

 
plant Features
  • Sea-urchin cactus likes full sun

    Full sun

  • Sea-urchin cactus likes very little water

    Very little water

  • Sea-urchin cactus is a little frost hardy: 32f (0°c)

    A little frost hardy: 32F (0°C)

  • Sea-urchin cactus likes light and free draining

    Light and free draining

 
plant information

Common name

Sea-urchin cactus

Latin name

Coryphantha cornifera subsp. radians

type

Succulent

family

Cactaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Sea-urchin cactus likes full sun

    Full sun

  • Frost

    Sea-urchin cactus is a little frost hardy: 32f (0°c)

    A little frost hardy: 32F (0°C)

  • Soil

    Sea-urchin cactus likes light and free draining

    Light and free draining

  • Water

    Sea-urchin cactus likes very little water

    Very little water

Plant & bloom calendar

  •  
    Best time to plant

full grown dimensions

The size of a fully grown Sea-urchin cactus is 0.60meters x 0.50meters 0.60 M 0.50 M

Coryphantha cornifera subsp. radians

This is a very variable species, normally solitary, rarely sprouting. Its stem is flat globose to cylindrical, up to 8-15 cm in diameter, 6-12 cm tall, dull olive-green, apex depressed, with a blunt, depressed apex covered with wool. Most of the plants develop the central spines only at the age of 7 to 15 years.They are very adaptable houseplants and will thrive in a range of indoor conditions.


Propagation

From Early Spring TO Late Winter

The most common form of propagation for succulents is called vegetative propagation. This involves cuttings, where several inches of stem with leaves are cut, allowed some time to heal and after healing produce a callus. After a week or so, roots should grow. Another method is division which involves uprooting an overgrown clump and pulling the stems and roots apart. The easiest method is to allow the formation of a callus from a leaf or segment.

 

Planting

From Early Spring TO Early Spring

Succulents need good draining soil. When planting in the garden, make sure the area drains well and is not in a hollow that remains wet. Specially prepared cactus soil can be purchased for planting in pots or incorporate sand, gravel or volcanic rock for better drainage. The container you are planting in should have a drainage hole and it is wise to put crushed rock at the bottom before your planting medium.

 
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