Astrophytum myriostigma ‘Onzuka’
Astrophytum myriostigma ‘Onzuka’ has snowy-white, heavily speckled epidermis with fabulous markings much like Astrophytum asterias ‘Super Kabuto’. The white marking varies considerably from plant to plant and there exist an enormous number of different designs, and also plants change their appearance in age and they are full of surprises as they grows.
How to Grow and Care
Astrophytums are not vigorous plants and they require a lot of patience to reach their full potential. Keep regularly watering and feeding them during the growing season and repot annually to give them space to develop. They need a temperate, dry winter as well, and make sure not to overwater them to avoid rotting their roots. If given sufficient care, they will develop marvelous flowers once they reach maturity.
Repot regularly to help them develop. Astrophytums should be repotted at the beginning of the growing season for best results, allowing them to grow into the impressive specimens for which the genus is known. Protect your hands before repotting due to their stiff spikes and lift the plant out all at once, then replace in a larger pot and backfill with soil. Don’t overwater or overfeed newly repotted cacti, as disturbances can be hard on them… – See more at: How to Grow and Care for Astrophytum.
It was created somewhat by chance in Japan around 1974-1977 by Mr. Tsutomu Onzuka. He intended to cross a three-ribbed Astrophytum myriostigma with Astrophytum myriostigma var. nudum. Subsequently, over several generations of repeated backcrossed of the the offspring he obtained, unexpectedly, some strange A. myriostigma characterized by large white dots.
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