Ariocarpus scaphirostris Boed.
Living Rock Cactus
Ariocarpus scaphirostris is a slow-growing, grey-green, geophytic cactus, rising barely above ground level. The stem is solitary, subglobose or globose, more or less rounded on top and up to 2.4 inches (6 cm) tall. The tubercles are erect, spineless, up to 1.6 inches (4 cm) long. The flowers are magenta and up to 1.6 inches (4 cm) in diameter and appear fall. The fruit is greenish, up to 0.6 inch (1.5 cm) long and up to 0.3 inches (8 mm) in diameter.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
You should plant your Ariocarpus in soil specifically formulated for cacti. You can buy cactus mix at your local nursery. Do not use generic soil mixes, because they will not provide enough aeration and drainage. Additionally, using a container without a hole, whether it is a pot or a terrarium, is a bad idea for the same reason.
Ariocarpus need a lot of sun. However, in hot, dry areas, they can be damaged by excessive sunlight, so you should either use a shadecloth to limit their sun or move them out of the sun during the hottest hours of the day. In more temperate areas, direct sunlight is fine.
These cacti prefer to be kept at room temperature or slightly lower, and in low humidity.
Ariocarpus scaphirostris is native to Mexico.
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