The spiral cactus (Cereus forbesii spiralis or Eulychnia castanea f. spiralis) is a rare and visually striking succulent known for its unique spiraling growth pattern. Here’s a full description of this fascinating plant:
Appearance
• Stem: The spiral cactus features a tall, columnar stem that grows in a distinctive twisting or helical pattern, making it highly sought after by collectors. The spiral can twist either clockwise or counterclockwise.
• Color: The stem is typically bluish-green to deep green, often with a slightly waxy or powdery texture.
• Ribs: It has pronounced, well-defined ribs that follow the spiral pattern along its body, usually ranging from 5 to 9 ribs.
• Spines: Small clusters of sharp spines emerge from areoles along the ribs. The spines are usually short, whitish to brownish in color, and not overly dense.
Growth & Size
• The spiral cactus can reach heights of 6–13 feet (2–4 meters) when mature, though it grows relatively slowly.
• It may take several years for the spiral form to become fully pronounced, as young plants initially grow straight before twisting.
Flowers & Fruit
• Flowers: Produces large, nocturnal, trumpet-shaped flowers that are typically white or pale pink, with a fragrant scent that attracts pollinators like moths and bats.
• Blooming Season: Usually in the summer or late spring.
• Fruit: If pollinated, it can develop edible, round, red-to-purple fruits with a sweet, pulpy interior.
Habitat & Cultivation
• Native Region: Believed to originate from South America, particularly Argentina, Bolivia, or Brazil.
• Sunlight: Prefers full sun but can tolerate partial shade.
• Soil: Needs well-draining soil, such as sandy or cactus mix.
• Watering: Requires minimal watering, allowing soil to dry completely between watering. Overwatering can cause root rot.
• Temperature: Thrives in warm climates and is not frost-tolerant; it should be kept above 50°F (10°C).
Propagation
• Primarily propagated through stem cuttings, as growing from seeds can be slow and unpredictable.
• Cutting sections of the stem and allowing them to callous before planting ensures better rooting success.
Special Features & Popularity
• The spiral shape makes it a unique and decorative plant for collectors and landscape designers.
• It is highly sought after due to its rare growth pattern, often commanding high prices in the plant market.
Save on Spiral cactus, Cereus forbesii spiralis, rare cactus, 1 gallon with a Etsy discount code