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Silver Torch Cactus in the GardenTags plant encyclopedia

Cleistocactus strausii

 

Silver Torch Cactus

Cleistocactus strausii is a perennial Cactus native to Bolivia and Argentina. It has slender erect grey-green columns which in pots can get as tall as 1.5 metres, although in its natural environment some can grow to 3 metres. Each stem is around 6cm wide, and have long narrow ribs. Each has white areoles spaced about 2cm apart with lots of white hairy spines, giving it a 'hairy', but tidy look. In addition, each areole has a smaller number of thicker, longer and slightly yellower spines. This Cactus branches at the base of the parent stem. When the plant reaches a metre or taller, it produces carmine-red narrow tubular flowers from areoles, around 8-10cm long, in summer. This Cactus prefers full sunny positions, but not extremely high temperatures. While in its native environment it is noted to survive down to -10 degrees Celsius, cultivated specimens are best kept frost free with a minimum winter temperature of 10 degrees Celsius. It needs good drainage and should be potted in a sand, gravel and soil/compost based mix.

Contributed by @richard.spicer.7906

 
plant Features
  • Silver Torch Cactus likes full sun

    Full sun

  • Silver Torch Cactus likes very little water

    Very little water

  • Silver Torch Cactus is not frost hardy

    Not Frost hardy

  • Silver Torch Cactus likes light and free draining

    Light and free draining

 
plant information

Common name

Silver Torch Cactus

Latin name

Cleistocactus strausii

type

Succulent

family

Cactaceae

ph

5.5 - 6.5 Acid - Neutral

  • Light

    Silver Torch Cactus likes full sun

    Full sun

  • Frost

    Silver Torch Cactus is not frost hardy

    Not Frost hardy

  • Soil

    Silver Torch Cactus likes light and free draining

    Light and free draining

  • Water

    Silver Torch Cactus likes very little water

    Very little water

Plant & bloom calendar

  •  
    Best time to plant

full grown dimensions

The size of a fully grown Silver Torch Cactus is 0.45meters x 0.35meters 0.45 M 0.35 M

Cleistocactus strausii

Cleistocactus strausii is a perennial Cactus native to Bolivia and Argentina. It has slender erect grey-green columns which in pots can get as tall as 1.5 metres, although in its natural environment some can grow to 3 metres. Each stem is around 6cm wide, and have long narrow ribs. Each has white areoles spaced about 2cm apart with lots of white hairy spines, giving it a 'hairy', but tidy look. In addition, each areole has a smaller number of thicker, longer and slightly yellower spines. This Cactus branches at the base of the parent stem. When the plant reaches a metre or taller, it produces carmine-red narrow tubular flowers from areoles, around 8-10cm long, in summer. This Cactus prefers full sunny positions, but not extremely high temperatures. While in its native environment it is noted to survive down to -10 degrees Celsius, cultivated specimens are best kept frost free with a minimum winter temperature of 10 degrees Celsius. It needs good drainage and should be potted in a sand, gravel and soil/compost based mix.


Planting young plants

From Early Spring TO Early Spring

Cleistocactus typically don't like direct afternoon sunlight and should be in partial shade through the hottest hours. They can take direct sunlight in the morning and afternoons. A rich, fast-draining cactus mix is ideal. To plant, do this preferably during the warm season. To repot a cacti, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot.

 
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