昙花

昙花的基本数据

养护难度

适合新手

寿命

多年生（关于寿命的资料较少）

体型

盆栽高度1～2米。花长约30厘米、宽约17厘米

浇水

4～9月施缓效肥料，10月施液体肥料。过多的氮肥会影响花芽形成

光照·放置位置

11～4月置于光线充足的室内；5～6月置于户外充分接受阳光可促进花芽形成。梅雨季结束至9月中旬为防止叶片灼伤应移至户外半阴处，9月中旬～10月再次充分接受阳光。

浇水

5～10月当土壤表面干燥时充分浇水。11～4月在表面干燥后数日再少量浇水，保持略干状态。

温度·越冬

怕冷，霜冻前应移至室内。保持略干状态可耐受接近0℃的温度。

土壤·换盆

使用排水良好的土壤，用相对较小的花盆种植。每2年左右于5～9月清除旧土和受伤的根系后进行换盆。

繁殖方法

5～9月通过扦插繁殖。将茎剪成2～3节段，或直接使用约30厘米的整段茎插入含肥量低的清洁土壤中。

病虫害·注意事项

全年茎叶上可见介壳虫，其排泄物引发煤污病。发现时用刷子刷除或按标签说明使用注册药剂。过度浇水会导致根腐，茎出现皱缩枯萎。

关于昙花

Queen of the night is an epiphytic cactus with 30 cm pure white flowers that open at night and fade by morning. Beginner-friendly, it grows 1 to 2 m tall in a pot. Care tips included.

开始养护昙花前需要了解的7件事

1. 1Bright, part-shade spot

   Strong direct sun can scorch the flat stems, so in summer a bright, part-shaded spot or light filtered through a sheer curtain suits it best. In a place that is too dark the stems get leggy and flowering tends to suffer, so make sure it still gets plenty of light.

2. 2Water when dry

   From spring to autumn, water thoroughly once the soil surface has dried, and empty any water left in the saucer. It is an epiphytic cactus that likes more moisture than desert cacti, so avoid letting it dry out completely. In winter, water less often and keep the soil on the dry side.

3. 3Well-draining soil

   Choose a mix that drains and breathes well while holding a moderate amount of organic matter. A commercial cactus and succulent mix with a little leaf mold blended in works nicely. Use a pot with drainage holes to help prevent root rot.

4. 4Repotting and support

   When the roots fill the pot, repot into one size larger in spring or early summer once it has warmed up. Since it grows about 1 to 2 m tall in a pot, pick a stable pot that will not tip over, and add a stake as the stems lengthen.

5. 5Bring it indoors for winter

   It dislikes cold, so once temperatures start to drop in autumn, move it from outdoors to a bright place indoors. In winter, water sparingly, keep it away from cold windowsills, and aim to keep it at 5 degrees Celsius or above.

6. 6Don't move it once budded

   Once buds form, try not to turn the pot or move it, which helps keep the buds from dropping. The flowers open at night and wilt by the next morning, so start checking on the plant in the evening to catch the big night.

7. 7Choosing a healthy plant

   Look for firm stems with a deep green color and no dark spots or soft, mushy areas. Also check the stem edges and bases for pests such as scale insects. Size and condition vary from listing to listing, so review the photos and description, and ask the grower if anything is unclear.

昙花的常见问题

Q.Can a beginner grow it?

A.Yes, it is rated beginner-friendly. If you provide a bright spot, well-draining soil and indoor protection in winter, this perennial is easy to grow.

Q.What are the flowers like?

A.They are pure white and huge, about 30 cm long and 17 cm wide, opening at night with a strong fragrance. Because they fade by the next morning, keep an eye on the buds so you are ready for the night they open.

Q.How big does it get?

A.In a pot it grows to about 1 to 2 m tall. Stems that get too long can be cut back to shape the plant, so you can train it to fit your space.

Q.Can I propagate it from cuttings?

A.Yes, you can propagate it by cutting off a piece of stem. It is common to let the cut end dry for a few days before setting it in well-draining soil.

Q.Why isn't my plant flowering?

A.Common reasons are too little light, weakness from winter cold or overwatering, or simply a plant that is still young. Start by moving it to a brighter spot, and in winter water less and keep it out of the cold.

昙花种植的实用工具

在图鉴中详细了解昙花

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