星球

星球的基本数据

养护难度

适合中级者

寿命

多年生。直径2～3厘米时就能达到开花大小

体型

高2.5～6厘米、直径5～15厘米

浇水

需肥量少（每年换盆时混入少量缓释肥料即可）

光照和摆放位置

全年保持光照充足、通风良好的户外环境，或在简易温室中管理。喜强光，但表皮纤细，改变放置位置时或突然晴朗时容易晒伤。

浇水

夏季生长型。春季至夏季是生长旺季。从早春到秋初，表土干燥后充分浇水。严冬时完全断水会导致植体下部凹陷，应在温暖的白天大约每月喷雾2次。

温度和越冬

喜欢高温，白天和夜间的温度差能形成紧凑的植株。最低气温降至15℃以下时，移至光照充足的温室或室内窗边，保持温度不低于5℃。

培养土和换盆

使用排水良好的仙人掌专用培养土，每年换盆时混入少量缓释肥料。长期过湿和光照不足会导致刺座变褐色，也容易发生烂根。

繁殖方法

用播种（种子）繁殖。因需要异花传粉，获取种子需要用2株或以上进行杂交。

病虫害和注意事项

作为附录I、国际濒危野生动植物物种，转让需要物种保护法的登记证（国内繁殖的植株也在此列）。超级兜等选育品系也按同样规定处理。

关于星球

Kabuto-maru (Sea urchin cactus) is a spineless, flattened cactus with about eight ribs and white star-like flecks. This perennial grows 2.5 to 6 cm tall and 5 to 15 cm wide, and it is rated intermediate. Care tips and FAQs inside.

开始养护星球前需要了解的7件事

1. 1Bright, airy spot

   Kabuto-maru likes a spot with plenty of light and moving air. Strong midsummer sun can scorch the body, so shade it or move it to bright partial shade at that time. Rain can cause stuffiness and root rot, so if you keep it outdoors, choose a place under eaves where rain does not reach.

2. 2Water well from early spring to early autumn

   Kabuto-maru is a summer grower, with spring through summer as its main growing season. From early spring to early autumn, water thoroughly whenever the topsoil has dried, until water runs from the bottom of the pot. Cut back in winter, but don't stop completely in midwinter or the lower body can sink in; mist it about twice a month on warm days. Prolonged damp and poor light make root rot more likely.

3. 3Fast-draining soil

   A fast-draining cactus and succulent mix is the basic choice. Blending in pumice or coarse sand improves drainage and helps prevent root rot. Choosing a pot that is not too large for the plant makes it easier to gauge how quickly the soil dries.

4. 4When to repot

   Repot in spring or autumn when the roots are crowded or the soil has broken down, roughly once every few years. Do not water right after repotting. Wait a few days so any root damage can settle before you start watering again, which helps avoid rot.

5. 5Summer and winter care

   Summer is its peak growing season, so water thoroughly whenever the topsoil dries. Its skin is delicate and can sunburn during sudden sunny spells or after a move, so take care when changing its location. In winter, once night lows fall below 15°C, move it to a sunny greenhouse or indoor windowsill and keep it above 5°C. Water sparingly, misting about twice a month on warm days.

6. 6Choosing a healthy plant and the registration certificate

   Look for a firm body with no wrinkles, discoloration or soft spots. The pattern of flecks differs from plant to plant, so part of the fun is picking the one you like best. As an Appendix I species, it must come with a registration certificate under Japan's Act on Conservation of Endangered Species (種の保存法), so always confirm the certificate when buying; this applies to selections such as Super Kabuto as well.

7. 7Getting it to flower

   The flowers are yellow with red centers and appear from March to June in the wild. It likes warmth and grows compact with a good day-night temperature swing, so keep it in a bright, airy spot. Because it is a perennial, you can enjoy it for many years with steady seasonal care.

星球的常见问题

Q.Can beginners grow Kabuto-maru?

A.It is rated as intermediate. Beginners can try it if they get the watering timing and airflow right, but root rot from too much moisture is the main risk. It helps to get into the habit of checking how dry the soil is before each watering.

Q.How big does Kabuto-maru get?

A.It reaches about 2.5 to 6 cm in height and 5 to 15 cm in diameter. It is a perennial that grows over a long period. When choosing a pot, keep its eventual size in mind to reduce how often you need to repot.

Q.How often should I water it?

A.Rather than following a fixed schedule, water based on how dry the topsoil is. As a summer grower, it should be watered thoroughly from early spring to early autumn whenever the topsoil dries, and less in winter. Even in midwinter, don't stop entirely; mist it about twice a month on warm days.

Q.When does Kabuto-maru flower?

A.Its flowers are yellow with red centers and appear from March to June in the wild. Whether it blooms depends on light and the condition of the plant, so keep it in a bright, airy spot and see how it does.

Q.How is it related to Super Kabuto?

A.Kabuto-maru is the original species behind Super Kabuto, which was developed through breeding in Japan. Appearance varies from plant to plant, so it is a good idea to check the actual photos for the fleck pattern and rib shape when choosing.

星球种植的实用工具

在图鉴中详细了解星球

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