裂纹岩牡丹

裂纹岩牡丹的基本数据

养护难度

适合高级者

寿命

多年生。生长极其缓慢，成熟需要10年以上。

体型

直径10-15厘米、高1.5-10厘米（栽培条件下可达直径20厘米左右）

浇水

肥料需求少（换盆时施用少量缓效有机肥）

光照与摆放位置

由于自生地环境中大部分身体埋于土中，不耐强光。春至秋季放置在避雨的室外或简易温室中，遮光30-50%；冬季放在简易温室或光线充足的室内。

浇水

夏型。土壤干燥后充分浇水，盛夏和冬季约每月浇水2次，使土壤轻微湿润即可。避免直接向顶部绒毛浇水以免冲散，应从植株基部浇水。

温度与越冬

喜欢高温，春季生长启动比其他仙人掌较晚。国内资料以3℃作为不枯死的最低温度参考。环境变化时期及梅雨晴间需注意日灼。

土壤与换盆

因具有粗壮直根，应选用较深的花盆并使用排水良好的土壤种植。每2-3年换盆1次，可混入少量缓效有机肥。

繁殖方法

通过播种（种子）繁殖。为加快生长也可嫁接到柱状仙人掌上。

病害虫与注意事项

易生介壳虫，且疣间隙易隐藏介壳虫需仔细检查。属附录I、国际濒危野生动植物种，转让需要登记证（国内繁殖株亦受管制）。

关于裂纹岩牡丹

Learn about the living rock cactus (Ariocarpus): a spineless, flat cactus with overlapping grooved tubercles and pink-purple autumn flowers. Very slow-growing and best suited to experienced growers.

开始养护裂纹岩牡丹前需要了解的7件事

1. 1Dislikes strong light, so shade it

   In the wild most of its body sits buried in the soil, so it dislikes strong light. From spring to autumn, keep it rain-sheltered outdoors or in a simple greenhouse under 30–50% shade, and in winter move it to a greenhouse or a sunny indoor spot. Watch for sunburn after moving it or during sunny breaks in the rainy season.

2. 2Water sparingly

   Water mainly in the spring and autumn growing seasons, and only once the soil has dried out completely. Cut back in midsummer and especially in winter. Water can pool in the crown and cause damage, so apply it at the base of the plant.

3. 3Fast-draining soil

   Use a low-organic mix that puts drainage first. A cactus blend based on granular materials such as pumice, akadama, or hyuga soil is a good guide. Avoid fine or moisture-retentive soil to reduce the risk of root rot.

4. 4Choose a deep pot

   Although the visible body is low and flat, this cactus tends to send a thick root deep into the soil. A pot with some depth suits the root and keeps the plant stable. Fast-drying pots such as unglazed clay work well too.

5. 5Repot only occasionally

   Because growth is so slow, frequent repotting is unnecessary. Repot in spring or autumn when the soil has aged and drains poorly, or when the pot becomes cramped. Wait a few days before watering afterward so any damaged roots can recover.

6. 6Summer and winter care

   In midsummer, avoid stuffy air and harsh light by moving the plant to bright shade with good airflow, and water less. In winter, keep it away from frost and freezing and let it stay on the dry side while dormant. During long spells of rain, move it under eaves or to a bright indoor spot.

7. 7Choosing a plant and the registration certificate

   Look for a plump, firm body with sturdy tubercles. Check the base and the bottoms of the tubercles for discoloration or soft spots, and look between the tubercles for hidden scale insects. 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.

裂纹岩牡丹的常见问题

Q.Can a beginner grow it?

A.It is rated for experienced growers. Watering and soil management take practice, so it helps to get a feel for them with other cacti or succulents first.

Q.When does it bloom?

A.It blooms in autumn, producing pink-purple flowers from the crown. Because the plant takes a long time to mature, a small plant may need to wait before it flowers.

Q.How large does it grow?

A.It reaches about 10 cm across (rarely 15 cm) and 1.5–10 cm tall. Because it grows so slowly, reaching that size takes many years.

Q.Is slow growth a problem?

A.No, it is simply how this plant is. It takes 10 years or more to mature, and pushing it with extra water or fertilizer can harm it.

Q.How often should I water it?

A.Go by how dry the soil is rather than a fixed schedule. Water in the spring and autumn growing seasons once the soil has dried out completely, and cut back in midsummer and winter.

裂纹岩牡丹种植的实用工具

在图鉴中详细了解裂纹岩牡丹

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