白星

白星的基本資料

栽培難度

適合中級者

壽命

多年生（缺乏壽命數據）

體型

莖高和直徑4～7釐米。群落寬度可達40釐米。

澆水

夏季生長期少量施肥

日照和放置位置

夏季在日照處或明亮的半陰處培育。放置在不被雨淋的地方可以保持白色刺的整潔。

浇水

按多肉植物夏季類型的方式培育仙人掌。夏季定期澆水，但如果水濺到刺上會損害外觀，因此應倒在株基部的培養土上。冬季也要避免培養土過幹。

溫度和越冬

冬季在不被霜淋、明亮的地方管理，避免培養土長期保持溼潤並受冷。

培養土和換盆

由於這個品種容易腐爛，要使用排水良好的培養土。長期溼潤的盆中容易傷害根部。

繁殖方法

從開始長出幼株到形成群落需要數年時間，但之後數年內就能佈滿25釐米的花盆。幼株的扦插很快就會生根。也可以通過播種繁殖。

病蟲害和注意事項

容易爛根，長期溼潤的盆中容易失根，特別要注意避免過溼。刺上沾水會被汙染影響外觀。

關於白星

White Star (Mammillaria), the feather cactus, is covered in soft, feathery white spines. Stems reach 4 to 7 cm tall and wide, and clumps can spread up to 40 cm. Care tips for intermediate growers inside.

開始照料白星前需要了解的7件事

1. 1For intermediate growers

   The feather cactus is rated for intermediate growers. Trapped moisture among the spines and overwatering are the usual causes of trouble, so get the basics of placement and watering right from the start.

2. 2Bright light, good airflow

   It prefers a bright spot, and too little light can make the stem stretch and lose its neat shape. Good airflow keeps moisture from lingering among the spines. If the midsummer sun looks too harsh, move it to bright partial shade.

3. 3Water at the base

   Water trapped among the spines can cause rot, so avoid wetting the plant itself and pour water onto the soil along the pot's edge. Wait until the soil has dried out completely, since overwatering can lead to root rot.

4. 4Fast-draining soil

   Mix a commercial cactus and succulent soil with gritty material such as pumice or coarse sand to improve drainage. A breathable unglazed terracotta pot helps the soil dry out faster and makes watering easier to manage.

5. 5When to repot

   Repot roughly every one to two years, or when the pot is full. Do it in the warm growing season and wait a few days before watering so any damaged roots can dry and settle. Holding the plant in folded newspaper keeps your hands off the delicate spines.

6. 6Seasonal care

   Treat it like a summer-growing succulent. In summer, keep it in sun or bright partial shade and water regularly, pouring onto the soil at the base so the spines stay dry, with good airflow to prevent stuffiness. In winter, keep it in a bright place away from frost; don't let the soil dry out too much, but don't let it stay cold and wet for long either.

7. 7Choosing a healthy plant

   Look for a plant whose white spines cover the body evenly and whose base feels firm. Avoid stems that are soft or discolored, or bases that are turning black. Check the listing photos and the grower's description for the size of the plant and how its offsets are growing.

白星的常見問題

Q.Do the spines hurt when touched?

A.The spines are soft and generally not painful to touch. They can get matted or dirty easily, though, so it is best to hold the pot rather than the plant.

Q.Can beginners grow it?

A.It is rated for intermediate growers. Because it dislikes overwatering and stuffy conditions, beginners should provide bright light and good airflow, and get in the habit of checking that the soil is dry before watering.

Q.How big does it get?

A.The stem measures 4 to 7 cm in both height and diameter. As offsets form and it grows into a clump, it can reach 40 cm across. Repot into a larger pot as the clump grows.

Q.How often should I water it?

A.Rather than following a fixed schedule, water only after the soil has dried out completely. Apply water at the base rather than over the plant, and go easy in humid weather and in winter.

Q.Can I grow it indoors?

A.A bright, sunny windowsill can work, but low light makes the stem stretch. Stagnant air encourages rot among the spines, so open the window from time to time or otherwise keep the air moving.

白星栽培的實用工具

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