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Care of the plant Mammillaria karwinskiana or Cactus karwinskianus.

Care of the plant Mammillaria karwinskiana or Cactus karwinskianus

The genus Mammillaria, family Cactaceae, includes more than 350 species of cactus native to Mexico mostly. Some species are: Mammillaria karwinskiana, Mammillaria hahniana, Mammillaria haageana, Mammillaria geminispina, Mammillaria discolor, Mammillaria crinita, Mammillaria compressa, Mammillaria carmenae, Mammillaria candida, Mammillaria bombycina, Mammillaria backebergiana, Mammillaria marksiana, Mammillaria parkinsonii, Mammillaria lenta, Mammillaria laui, Mammillaria magnimamma, Mammillaria pringlei, Mammillaria spinosissima, Mammillaria vetula.

Scientific synonyms: Cactus karwinskianus, Neomammillaria karwinskiana. This species is native to Guatemala and Mexico.

They are cacti with a bluish-green cylindrical body that can produce suckers and reach 15 cm in height. They have woolly and white bristles in the armpits. They have 4-6 dark radial spines and no central spines (sometimes 2). The flowers can be yellow or white with reddish tones.

They are used in pots as a houseplant, greenhouse, balcony and terrace and in rockery in frost-free regions.

Mammillaria karwinskiana needs full sun exposure and a hot, dry climate. The winter temperature should not be lower than 5 ºC.

The soil can be a commercial cactus substrate with 20% coarse sand.

Water once a week in summer, every 2 weeks in spring, once a month in autumn and do not water in winter.

Fertilize in spring with mineral fertilizer for cacti and succulents diluted to half the usual dose.

They do not need pruning.

The biggest danger for these plants is excess moisture.

They propagate from seeds sown in spring in a slightly humid sandy substrate.

Images of the plant Mammillaria karwinskiana or Cactus karwinskianus

Mammillaria karwinskiana
 

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