Cleistocactus genus. This genus consists of about 50 species; all the species have ribbed stems. The flowers are narrowly tubular and slightly one-sided in the way they open.
Perennials, Evergreens, Cactus
This is a frost tender, min 5C plant, and will need full sun and well drained soil.
You can propagate by seeds or stem cuttings in the spring or summer.
Mealy bug and root rot may be problematic.
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