Ariocarpus confusus Description: Ariocarpus confusus is a peculiar local form somewhat intermediate between Ariocarpus retusus and Ariocarpus trigonus. This two taxa intergrade in the area adjacent to Aramberri (a natural hybrid?). The peculiarity of Ariocarpus confusus is that it usually develops deep magenta flowers (a color not found in any other populations of A. retusus/trigonus), however white or pink flower or variations of the two or even bicoloured flowers in the same plant are not uncommon.
Habit: Solitary globose plant, rising slightly above ground level, rounded on top
Stem: 10 to 20 cm in diameter, 4 to 10 cm tall.
Tubercles: Upright tan brownish/green to magenta/green divergent, not crowded or basally compressed, acute at the apices, flattened and smooth adaxially, not fissured, incurved strongly, 3-8 cm long, 1-2,5 cm broad, usually more long than wide.
Root: Tap root.
Flowers: Extremely variable from Cream-white to rich magenta, 3 to 5 cm in diameter up to 4 cm long.
Blooming season: They come in late autumn or early winter.
Remarks: Ariocarpus confusus is an extremely variable species.
Cultivation and Propagation: This species is slow growing if compared with other retusus forms, but of easy culture in a well drained non-organic free draining soil compost, with ample water during the growing season. Use of a weak low-nitrogen fertilizer during the growing season can encourage growth. The main threat to their development is root rot. Ariocarpus should be kept dry whenever there is a threat of cold. The appearance of Ariocarpus can benefit greatly by watering the plants from the bottom. This practice will help to keep the “wool” on the top of the plant from becoming matted or discoloured. Need light shade to full sun. Frost Tolerance: Hardy to -10°
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