Scientific Name
Acharagma roseanum (Boed.) E.F.Anderson
Synonym(s)
Coryphantha roseana, Echinocactus roseanus, Escobaria roseana, Gymnocactus roseanus, Neolloydia roseana, Thelocactus roseanus
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cacteae
Genus: Acharagma
Origin
Acharagma roseanum is native to northern Mexico.
Description
Acharagma roseanum is a small cactus, solitary at first, later forming a clump of globular stems with ribs that have tubercles with ungrooved areoles. The stems can grow up to 2.4 inches (6 cm) tall and 2 inches (5 cm) in diameter. The spines range from whitish-yellow to golden yellow. Each areole bears 4 to 6 central and 15 to 30 radial spines.
The flowers are cream-yellow to pink with a darker midvein and appear at the stem tips in spring.
Hardiness
USDA hardiness zones 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).
How to Grow and Care
These cacti do best in a sunny window, perhaps a southern exposure. Plants that do not get enough sunlight will grow more slowly and fail to thrive.
It is critical never to let these cacti be exposed to prolonged periods in water or even very high humidity. They will suffer from rot in the presence of humidity.
Echinocactus are vulnerable to pests, including aphids, mealybugs, scales, and whiteflies. Identify the infestation as early as possible and treat it with the leave toxic option.
It is best to repot at the beginning of the growing season or summer. To repot a cactus, ensure the soil is dry before repotting, then gently remove the pot. Next, remove the old soil from the roots, removing any rotted or dead roots.
Learn more at How to Grow and Care for Echinocactus.
Links
- Back to genus Acharagma
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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