Cactus e Dintorni

Habitat: high plateau region of central Mexico, Guatemala.
Description: a group of branching, tree-like cacti with more or less prominent ribs that are difficult to get to flower in cultivation. The small blooms are borne on the large areoles and are followed by edible fruits that resemble blackcurrants. The bluish stems are marked by 5 or 6 ribs and have short spines. The cristate form is much sought after by collectors.
Soil: basic mix.
Location: direct light.
Temperature: the minimum temperature should not drop below 10°C (50°F) so as to avoid the emergence of unsightly spots; the maximum should not exceed 30°C (86°F).
Water: average with care. If plants are overwintered at temperatures above 10° (50°F) they need to be watered occasionally.
Cultivation tips: easy but they are prone to rot due to excess humidity. They might be used as rootstocks.
Main species of Myrtillocactus: Myrtillocactus geometrizans, easy, vigorous, with a bluish glow, makes an excellent rootstock; Myrtillocactus lindsayi.