盾毛氈苔

盾毛氈苔的基本資料

栽培難度

適合高級者

壽命

多年生（球莖夏季休眠）

體型

高度10～30cm（國內株系）

澆水

不施肥（捕捉小昆蟲）

日照與放置位置

在日照充足的涼爽場所培養。球根性毛氈苔若光線明亮且涼爽則生長強健，但如果持續超過25℃的高溫，地上部會提前枯萎。

澆水

生長期用淺的腰水保持濕潤。花後地上部枯萎時，應控制澆水使基質保持略微濕潤，以防球莖腐爛。

培養土與移植

根系易長且易受傷，須使用較深的盆器，採用泥碳土1：砂2左右的比例混合種植。避免在生長期間移植，應在休眠期進行移植。

休眠期管理

夏季地上部枯萎，以球莖進入休眠。地上部枯萎後不要丟棄。休眠狀態難以觀察，長期維護並不容易。

肥料

基質中不添加肥料。養分由捕捉的小昆蟲供應。

病蟲害與注意事項

國內自生地的盾毛氈苔瀕臨絕滅，應禁止採集野生株。購買時應選擇人工繁殖品。

關於盾毛氈苔

Ishimochisou (shield sundew) is a Japanese native carnivorous plant with crescent-shaped sticky leaves, spring growth from a tuber, early-summer white flowers, and summer dormancy, a rewarding challenge for experienced growers.

開始照料盾毛氈苔前需要了解的7件事

1. 1Sun and Cool Conditions

   During the growing season, keep it in a cool, sunny spot. Tuberous sundews are tough when kept bright and cool, but extended heat above 25°C makes the foliage die back early. Once the top growth dies down for dormancy in summer, take care not to let the tuber rot.

2. 2Tray Watering

   During active growth the soil must stay consistently moist, so standing the pot in a shallow saucer of water, known as tray watering, is the standard method. Cut back sharply once summer dormancy begins, keeping the soil only slightly damp. Switching between these two modes with the seasons matters, since the plant tolerates neither drought nor waterlogging well.

3. 3Soil Mix

   The roots are long and easily damaged, so use a deep pot and a mix of about one part peat to two parts sand. Keep fertilizer out of the soil and water with rainwater or purified water. Avoid repotting during growth; do it while the plant is dormant.

4. 4Repot During Dormancy

   Repot only during summer dormancy, once the foliage has died back. The tuber is very small and delicate, so lift it gently along with the surrounding soil and avoid letting it dry out completely. Repotting during active growth can seriously weaken the plant.

5. 5A Changing Seasonal Cycle

   In spring it sprouts from an underground tuber and sends up a stem, flowering white in May and June. From summer on the foliage dies back, leaving only a dormant tuber. This is easy to mistake for death, but it's a normal part of the cycle, so don't throw it out: cut back on water to keep the soil just slightly moist so the tuber doesn't rot.

6. 6Check the Tuber

   When choosing a plant, look beyond the leaves to whether the tuber feels plump and firm, since this is a key sign of health. If you acquire one during dormancy, dieback of the foliage is completely normal, so check the soil condition and any accompanying notes instead.

7. 7No Feeding Needed

   The sticky glands on the crescent-shaped leaves naturally trap small insects, so there is generally no need to feed the plant by hand. Leaves whose glue has dried up are simply reaching the end of their natural lifespan, not a sign that the whole plant is struggling.

盾毛氈苔的常見問題

Q.My leaves died back in summer, is it dead?

A.No, this is normal. Ishimochisou dies back to a dormant tuber from summer on as part of its regular cycle. Keep the soil only slightly moist so the tuber doesn't rot, and it will sprout again in spring.

Q.Should I feed it insects to help it grow?

A.Feeding is not necessary in most cases. The sticky leaves catch small insects naturally when the plant is kept outdoors, and hand-feeding can actually damage the delicate leaves.

Q.Can I water it the same way as a regular houseplant?

A.No, watering needs change significantly with the season. Keep the soil constantly moist with tray watering during active growth, then cut back in summer dormancy, and use rainwater or purified water rather than tap water whenever possible.

Q.When is the best time to repot?

A.The best time is during summer dormancy, after the foliage has died back. The tuber is small and delicate, so repotting during active growth should be avoided.

Q.Is this a good plant for beginners?

A.It is generally considered a plant for experienced growers, since it requires careful, season-specific adjustments to watering and soil conditions. It is best approached after gaining some experience growing other carnivorous plants.

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