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Echinocereus poselgeri – Dahlia Cactus

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Scientific Name

Echinocereus poselgeri Lem.

Common Names

Dahlia Cactus, Dahlia Hedgehog Cactus, Dahlia Apple Cactus, Lead Pencil Cactus, Pencil Hedgehog Cactus, Pencil Cactus, Sacasil, Zocoxochitl

Synonyms

Cereus poselgeri, Cereus poselgerianus, Cereus tuberosus, Echinocereus kroenleinii, Echinocereus tamaulipensis, Echinocereus tuberosus, Echinocereus waldeisii, Wilcoxia kroenleinii, Wilcoxia poselgeri, Wilcoxia tamaulipensis, Wilcoxia tuberosa

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Pachycereeae
Genus: Echinocereus

Description

Echinocereus poselgeri is a shrubby cactus, initially erect, later sprawling or clambering. The stem is very tall and slender, dark colored up to 4 feet (1.2 m) long and up to 0.8 inch (2 cm) in diameter. The spines are tan-grayish white. The flowers are pink rose to pink-purple. The fruits are up to 0.8 inch (2 cm) long, up to 06 inch (1.5 cm) in diameter and dark green to brownish in color.

Photo via lequyuanyi.com

How to Grow and Care

If you can successfully grow other globular cactus, you can most likely grow Echinocereus well. One of the key factors in success with these is avoiding any hint of wet soil. Because their root systems are weak, they are especially prone to root rot, which will eventually kill your plant. Otherwise, they thrive on a program of strong, bright light; slight water; and a steady diet of light fertilizer. Echinocereus is vulnerable to mealybugs and aphids.

Echinocereus are slow growing cactus that should only need repotting every other year or so. You can prolong the time to repotting by removing plantlets and potting them up in their own pots. When repotting a cactus, carefully remove it from its pot and knock away any clumped soil. These plants tend to be shallow-rooted with weak root systems, so take care not to damage their roots… – See more at: How to Grow and Care for Echinocereus.

Origin

Native to Mexico (Coahuila) and United States (southern Texas).

Links

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