How Do You Take Care Of Dioscorea Japonica?

How Do You Take Care Of Dioscorea Japonica?

Dioscorea Japonica is easy to care for and requires little maintenance. Dioscorea Japonica prefers full sun to partial shade and well-drained garden soil. It grows well in a humid greenhouse and can be cultivated outside in warm garden settings in the temperate north.

To grow, the Japanese yam Dioscorea japonica requires continually wet soil. Water the plant in the morning every day, ensuring the top two inches are damp but not wet. It is recommended to get at least 1 inch of water every week.

Water a little extra in the summer to encourage optimal tuber growth. The following are the factors to consider when caring for Dioscorea Japonica:


Dioscorea Japonica requires 1-2 inches of water every week. (Remember, the top two inches must remain damp.) The Japanese yam prefers moist soil, and it’s important to water it with water from a hose regularly.

It’s a good idea to put the Japanese yam in a tub or basin under the tap while filling it with water to keep the roots of your plant well-moistened at all times.


Dioscorea Japonica prefers well-drained soil. If using a pot, place the tuber in a large bowl. Fill the tub or basin with water to cover the tuber. Cover with a 2-3 inch layer of soil and allow to sit for several hours before submerging it in water.

Use a mixing potting soil and water your plant regularly. It is also a good idea to sprinkle a layer of well-rotted manure (and a little compost) on top of the soil every week.


Dioscorea Japonica prefers full sunlight to partial shade. It can be grown in a greenhouse but prefers about 4 to 6 hours of direct sunlight per day. The sunlight will maintain a good temperature indoors, and the leaves will continue to photosynthesize. Indoor should be placed east or west window facing. Avoid direct sunlight before noon.


Dioscorea Japonica thrives in warmth between 65 and 86 degrees Fahrenheit. During the spring and summer, it can be brought indoors for indoor growth, but keep the temperature at a steady 70 degrees Fahrenheit.

Move your plant back outdoors in the fall when temperatures drop below 55 degrees Fahrenheit. This hardy Japanese yam can resist temperatures as low as -25°F and temperatures as high as 100°F.


Dioscorea Japonica prefers high humidity. During the spring and summer, it can be grown indoors, where humidity levels of 60-76% can be maintained. Humidity levels should be maintained at 70% during the winter months when temperatures are cooler.


Dioscorea Japonica is a heavy feeder. It needs lots of nitrogen and phosphorus. To fertilize, it’s recommended to use a complete fertilizer formulated specifically for jade plants with high amounts of phosphorus and plenty of nitrogen.

This will encourage fast growth in your plant and make it healthy. The fertilizer should be directed towards the top surface of your soil, where the leaves are growing.


The tuber division and seeds can propagate Dioscorea Japonica during the spring and summer. To propagate, use a sterile blade to slice the tuber into halves or quarters; each new tuber should have a bud at its center.

Let the cut section callus over for one day and plant it in the soil. It’s also a good idea to plant the cut sections in a bowl of water (covered by one inch of water) for several hours before planting in the soil.


Dioscorea Japonica can be repotted as needed. Repot in the spring every 1-2 years unless the soil becomes compacted. To repot, take apart the plant and use soil to break it up into pieces of about two inches.

Mix in some compost and manure, water well, and place into a new container with a layer of soil over the roots. Place the potted tuber in a sunny window until it is reestablished in its new container.


Dioscorea Japonica is a deciduous plant that does not require pruning. However, if you want to remove dead or dying leaves, simply pull off the old leaves. If the plant is getting too tall, cut the top of the plant back by 1/3 to 1/2 and water thoroughly.

The new growth will spring up again and look identical to the first growth. The best time to prune is in early spring, just as the plant is starting to grow.

Pests and Diseases:

Dioscorea Japonica is susceptible to attack by various pests and diseases, including two-spotted spider mites, mealybugs, root rot, and other fungal diseases. If your plant is suffering from any of these ailments, it’s important to treat it as soon as possible.

The most effective treatment for chrysanthemum mites or mealybugs is a preventative spray with a systemic insecticide. This should be done every week starting in March or April.

What Is Dioscorea Japonica Root Extract?

Dioscorea Japonica root extract is a liquid extract derived from the roots of the Japanese yam. Mountain yam root extract from Japan is recognized for its healing, skin-conditioning, and antioxidant properties. It is ideal for use on the skin, cosmetics, and personal care products.

Dioscorea Japonica root extract is also useful for aiding in the relief of coughs and sore throats, as well as improving menstrual cycles. Due to its antibiotic properties, Dioscorea Japonica root extract has been used for centuries in Japan for treating wounds and infections.

Dioscorea Japonica root extract contains abundant antifungal properties that can boost immune system function. When extracting the roots of the Japanese yam, include both the root and crown. The crown contains anthraquinones that can prevent noradrenaline secretion by adrenergic nerve endings, lowering blood pressure and reducing stress.

Dioscorea Japonica root extract is mostly used in cosmetics and personal care products due to its ability to moisturize, nourish, soften, repair, regenerate and protect skin tissues. You should be aware that Dioscorea Japonica root extract is unsuitable for people with sensitive skin, as it can cause stinging and itching.

However, Dioscorea Japonica root extract is a particularly effective moisturizing and restorative compound for dry skin and can be used in products such as creams, lotions, serums, and toners.

How Do You Repot Dioscorea Japonica?

Dioscorea Japonica should be repotted every one to two years. Use a sterile blade to cut through the plant’s crown in the spring. The crown is the root area at the bottom of your plant. You will also want to divide up your tuberous roots.

To do this, use a knife to slice through each tuberous root’s middle, ensuring each piece has a bud or section of new growth at its center. Plant your Dioscorea Japonica into individual pots and keep them well-hydrated.

When repotting Dioscorea Japonica, ensure that the new soil is well-draining and does not contain a lot of fertilizer. You should water your plant less frequently in the fall and winter months. During the summer, water your plant every day.

Dioscorea Japonica is a perennial plant that will come back yearly with minimal care. In the spring, fertilize Dioscorea Japonica with a portion of food specifically designed for jade plants or yam plants and apply it to the top of your soil as directed by the manufacturer.

Dioscorea Japonica prefers full sun, although it can tolerate partial or filtered light. Here are steps to follow when repotting:

  • Use a sterile knife to cut through the center of each tuberous root.
  • Soak your Dioscorea Japonica in water for 12 hours before repotting.
  • Remove the plant from its pot and gently separate it into halves with your fingers, trying to keep as much soil intact as possible.
  • Place your plant in a new container filled with half potting soil and half compost or leaf mold, keeping the crown at the top of the soil line.
  • Use your fingers to cover the crown with soil, ensuring it is well-positioned in the center of the new pot.
  • Place your plant in a sunny location, preferably an area that gets at least six hours of direct sunlight per day.
  • Water the soil from below by placing the pot in a tray or bowl and filling it with lukewarm water until the water rises to just below the level of your soil line.
  • Allow the water to drain out of the pot before setting it on a dish towel, where the plant can dry completely.

What Are Some Examples Of Treatments With Dioscorea Japonica Root?

Dioscorea Japonica root has been used in Chinese medicine to treat dysentery and malaria. It has also been used to treat bronchial congestion, conjunctivitis, postpartum infections, and parasitic infections.

In traditional Chinese medicine, Dioscorea Japonica is thought to help improve blood circulation and reduce swelling. It is also thought to benefit the gastrointestinal system, enhance digestion, and be an antipyretic that lowers fever.

Dioscorea Japonica root has a wide variety of possible uses in alternative medicine. It has been used for centuries in Chinese medicine to treat various health conditions and is currently used in some Western holistic medicine practices as well.

It is commonly recommended by holistic nutritionists and natural health practitioners as an anti-inflammatory food that can be added to salads, soups, stews, smoothies, and juices.

It also has a significant amount of vitamin C, which increases collagen production in the body. The compound in Dioscorea Japonica that is thought to help with inflammation, connective tissue formation, and tissue regeneration is called saponins.

Dioscorea Japonica can act as an effective diuretic that increases urine output and improves kidney function. Treating painful joints and muscles can be made into a tea or added to a drink. It has also been used to treat digestive problems and liver ailments.

The saponins present in Dioscorea Japonica root have been shown in certain studies to help lower blood pressure, lower cholesterol levels, and reduce cardiovascular disease risk factors. Dioscorea Japonica contains large amounts of calcium and phosphorus, which strengthen bones.

Yams contain high levels of essential amino acids, niacin, riboflavin, vitamin C, thiamine, copper, and potassium.


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