When most people hear "Astrophytum," they immediately think of this plant—Kabotomaru, or "Kabuto"—and @1- , the two standout members of the group, plus a few others. These two are so distinctive and popular, they're often spoken of as a dynamic duo. *Its features are so clear-cut, you'd say "just look at it"*: a perfectly round, thornless body, regularly arranged tufted "pom-poms" along vertical lines, and its iconic pattern of white "stars" scattered across. Its name comes from its resemblance to the very top, or "summit," of a Japanese samurai helmet when viewed from above. The white markings are highly individualistic from plant to plant, leading to great variety in popularity and price as well. Some plants have been given cultivated variety names such as Super Kabuto, Miracle Kabuto, and Ruri Kabuto. It produces white to yellow flowers in early summer. Since it's dioecious (having separate male and female individuals) and rarely produces offsets, propagation is typically by "cross-pollination," which is one reason for its abundant variations. By the way, although everyone calls it "Kabuto," that's a nickname or common name, while its formal Japanese name is "Kabotomaru."
| Season Type | Summer |
|---|---|
| Sun Exposure | Full Sun Partial Shade |
| Hardiness | -5℃ / 23℉ |
| Blooming Season | Sp Su Fa Wi |
Gray display shows general information for Astrophytum.
IUCN RedList 危急
CITES 絶滅危惧 輸出入禁止
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This species is incredibly popular, with growers around the world—Japan included—competing to create unique new varieties distinguished by their whiteness or striking patterns. Here, we'll introduce a few of these.
Because nearly all Kabuto are propagated from seed by cross-pollination, even plants with the same cultivar name often look fairly different from one another.
This variety traces its origins to a plant brought back from the United States around 1980. There's considerable variation in the size and density of its white dots, so you can enjoy many different patterns.
This variety comes from a specimen imported from Mexico around 1980. Compared to Super Kabuto, these tend to have a denser, more uniform covering of dots, resulting in a much whiter appearance overall.
An especially fluffy and unique form. The cultivar name "Hanazono," meaning "flower garden," comes from its tendency to bloom prolifically not just near the growth point, but from a variety of locations on the plant.
In stark contrast to other varieties that compete in whiteness, Ruri Kabuto is a green-bodied form that lacks almost any small white spots. With its poised, striking beauty, it's a popular species with further varieties within the Ruri Kabuto group.
瑠璃兜、腰折れしたから水栽培してある程度の形に戻ったし乾燥して鉢に植え替えたらまた腰折れしちゃったな…腰折れだけで根も本体(肉感)も色も変化はない、蕾も成長しかけてる水栽培で育てていくしかないのかな？ #サボテン #アストロフィツム #瑠璃兜丸
【ゆっくり解説】サボテン応用講座 アストロフィツム編【兜丸・ランポー玉や他4種類】 https://t.co/kEy2E13vkg
Ceropegia Woodii Variegata Astrophytum Asterias https://t.co/IehjvhX5TN
Cactus Astrophytum asterias, de México y EEUU. https://t.co/IFic9hTboO https://t.co/osEbuq140u
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