Astrophytum myriostigma var. nudum


Astrophytum myriostigma var. nudum


Astrophytum myriostigma nudum is native to the state of San Luis Potosì (Mexico).


Astrophytum myriostigma var. nudum distinguishes from other myriostigma for its smooth epidermis: it lacks completely or mostly the characteristic white flecks of myriostigma. As a results, its stem, which can be spherical or shortly columnar, shows its colours: bright green, blue-green, gray-green or mauve-green. It can get up to 120 cm tall, and its section is star-shaped. Ribs are usually 5, but can be from 3 to 8. After 6 years of life, A. myriostigma nudum can bloom from spring to early summer, forming pale-yellow, silk-shining flowers.


This Astrophytum is a relatively easy-to-grow species. It needs a mineral, well-draining soil, with little humus. Water sparingly from March till October, letting the soil getting dry before watering again; you can also add a little fertilizer. To avoid root rot and frost damages, keep it dry from the beginning of autumn to the end of winter. It is theoretically hardy to -7°C, but during cold months keep it in a cool place. It does well from full sun to light shade: with a good amount of light, the plant will get beautiful and healthy.


Propagation is usually, easily done by seeds; anyway, this Astrophytum is sometimes grafted on other cacti.


This cultivar lacks the white flecks on its stem and its epidermis is smooth: from that, the name “nudum”.

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