水葫芦

水葫芦的基本数据

养护难度

适合新手

寿命

多年草。易因寒冷而枯死

体型

高度通常数十厘米。根着泥时最高可达约1.5米

适宜温度

25〜30℃

浇水

喜欢养分丰富的水。养分不足时叶片会变浅

光照/照明

需要充足的阳光。在室内等光线较弱的地方会逐渐衰弱并枯死。

二氧化碳/肥料

无需添加二氧化碳。在养分丰富的水中生长良好，生长不良、叶片变浅时，通常是由养分不足或低温引起的。

水温/水质

适温为25～30℃。不耐寒，冬季大多会枯死，如要保留，需在明亮的室内保持水温。

基质/着生

漂浮在水面上栽培。适合在屋外容器、水生植物园或敞口的大型水族箱中栽培。

修剪/繁殖方式

通过走茎不断产生子株，要定期去除过多的株体。

注意事项

列在《生态系统危害防止外来物种名单》的"防除推进外来种"。绝对不能丢弃到河流、池塘或水渠中，防止因下雨容器溢出而逃逸。处理株体时需先晒干再作为垃圾丢弃。

关于水葫芦

Discover water hyacinth, a beginner-friendly floating plant from South America that needs no soil and produces pale blue-purple flowers each summer.

开始养护水葫芦前需要了解的7件事

1. 1Full Sun Is a Must

   Water hyacinth needs full sun. In a bright, sunny outdoor spot it grows well and flowers readily, but in weak light — indoors, for example — it gradually weakens and dies, so keep it in an outdoor container or water garden.

2. 2Watch the Water Level

   Since it isn't planted in soil, there's no watering as such — instead, just keep the container topped up with water. In summer, water evaporates quickly, so check the level often and refill as needed.

3. 3No Soil Needed

   As a floating plant, water hyacinth draws nutrients through roots that hang in the water, so no soil is required. Simply let it float in a tub, pond, or water garden.

4. 4Propagate by Division

   New plantlets form at the end of runners and can be separated from the parent once their roots are well developed. Thinning out crowded plants helps each one stay healthy.

5. 5Sensitive to Cold

   Although it's a perennial, water hyacinth doesn't tolerate cold well, and its leaves can blacken and die back as temperatures drop. To keep it going through winter, move it indoors to a warm tank or container.

6. 6Choosing a Healthy Plant

   Look for plants with plump, rounded leaf stalks and glossy, firm leaves. Healthy white roots trailing in the water are also a good sign of vigorous growth.

7. 7Keep Growth and Disposal in Check

   Water hyacinth multiplies very quickly and can cover a water surface in a short time under good conditions. It is listed as a "priority control" invasive species on Japan's Ministry of the Environment list of alien species harmful to ecosystems; buying and growing it is legal, but it must be kept out of natural waters and managed so it can't escape. Never dump it into rivers, ponds, or waterways, keep rain from overflowing the container and washing plants out, and dry out any plants you discard before throwing them away.

水葫芦的常见问题

Q.Can it grow without being planted in soil?

A.Yes, water hyacinth is a floating plant that doesn't need soil — its roots hang in the water and absorb nutrients directly.

Q.Can it survive outdoors in winter?

A.It's sensitive to cold, so overwintering outdoors can be difficult. Moving it to an indoor tank when temperatures drop makes it easier to keep it growing the following year.

Q.When does it bloom?

A.It typically flowers in summer, producing pale blue-purple blooms. Depending on sunlight and growing conditions, it may not flower every year.

Q.How big does it get?

A.It's a floating plant held up by swollen, bladder-like leaf stalks, and its size varies with the plant and growing conditions. It keeps producing new plantlets on runners and grows vigorously in nutrient-rich water, spreading across the surface, so remove excess plants regularly.

Q.What should I do if it multiplies too much?

A.Because it grows and spreads very quickly, thin it out regularly to keep it manageable. Never let it escape into outdoor ponds or waterways, as it could affect the local ecosystem.

水葫芦种植的实用工具

在图鉴中详细了解水葫芦

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