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Gymnocalycium hossei
Scientific Name: Gymnocalycium hossei A. Berger
Synonym: Echinocactus hossei, Gymnocalycium guanchinense, Gymnocalycium weissianum, Gymnocalycium nidulans, Gymnocalycium rhodantherum, Echinocactus rhodantherus, Echinocactus mazanensis, Gymnocalycium mazanense
Family: Cactaceae
Gymnocalycium  hossei
Gymnocalycium hossei at the Wallace's collection in Phoenix in April (as Gymnocalycium mazanense)
Recommended Temperature Zone:
USDA: 9b-11

Minimum Avg. Temperature: 50°F (10°C)

Sun Exposure: Light shade

Origin: Argentina (Córdoba)

Growth Habits: Solitary, up to 6 inches in diameter (15 cm)

Watering Needs: Summer grower, water regularly in summer, keep rather dry in winter


The genus name "gymnocalycium" comes from the Greek for "naked calyx" referring to the flower buds bearing no hair or spines.

Gymnocalycium mazanense

Blooming Habits:

Fruiting Habits:

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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