Torch Cactus

Trichocereus spachianus

"Trichocereus spachianus", commonly known as the golden torch, torch cactus or golden column, is a species of cactus native to South America. It is commonly cultivated as a pot or rockery plant worldwide. It has a columnar habit, with a lime-green cylindrical body with 1–2 cm long golden spines.
Trichosereus spachiana or Golden Torch Cereus flower https://www.jungledragon.com/image/134153/trichocereus_spachiana_or_golden_torch_cereus_plant.html Echinopsis spachiana,Geotagged,Spring,Torch Cactus,Trichocereus spachianus,United States

Appearance

"Trichocereus spachianus" grows as a cactus with a columnar habit, reaching 2 m high, with a diameter of 5–6 cm. Vertical branches arise from the base of the plant. Each column has 10–15 rounded ribs. The large areoles are around 1 cm apart, and have wavy yellow hairs. The straight spines are red-yellow initially, fading to white as they age. The central spine is around 1–2 cm long, and is surrounded by 8 to 10 smaller radial spines that are 0.4–1 cm in length. The white flowers are 15 cm across and 18–20 cm long, part of which is an 8 cm long tube. In their native habitat, the flowers appear in June–July and open at night.
Big Bertha Each year, in several flowerings, she produces one or more enormous blooms up to 6 inches wide.  The lovely petals begin to open when the evening cools.  A treat for morning people, Big Bertha’s flowers are wide-open at sun-up, but often gone again by noon. Echinopsis spachiana

Distribution

"Trichocereus spachianus" is native to western Argentina. It is a declared weed in South Africa.

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderCaryophyllales
FamilyCactaceae
GenusTrichocereus
SpeciesT. spachianus