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Dioscorea Japonica: Yamaimo, Japanese Hill Yam

One intriguing wild yam types is Dioscorea japonica, likewise referred to as Yamaimo. It’s a Japanese wild yam with high worth in Japanese food. Comparable to the Chinese yam, it’s referred to as the Japanese cinnamon creeping plant, differentiating it from the Chinese cinnamon creeping plant. Their typical names are typically utilized mutually. Since it’s one of the couple of that’s consumed raw, It stands out amongst various other yam types. It’s likewise cold-hardy, distinguishing it from Chinese yam, or cinnamon creeping plant. They are both participants of real yam Dioscoreaceae family members, in the category Dioscorea

as well as they both turn into several feet-long roots.

Yamaimo is belonging to the hills of Japan yet removes in The United States and Canada. A lot of the issues individuals have with this glutinous yam is managing it. Its Chinese loved one is an intrusive types in particular components of the USA, as well as likewise needs upkeep. You can expand yamaimo at house.

Dioscorea japonica
Quick Treatment Overview Dioscorea japonica is a remarkable vining plant that generates edible roots.
Resource: harum.koh Typical Name( s)
Yamaimo, hill yam, Japanese yam, Eastern Eastern hill yam, Jinenjo, shan yao, nagaimo, cinnamon creeping plant Taxonomic Name
Dioscorea japonica Days to Harvest
730 days Light
Complete sunlight to partial color Water
1 inch each week Dirt
Light, abundant, well-draining Plant Food
Slow launch, pellet used after 8 weeks of development Bugs
Origin knot nematodes, birds, computer mice Illness

Origin rot

Air potatoes of Dioscorea japonica
Everything About Dioscorea Japonica The “air potatoes” or airborne roots of Dioscorea japonica.

Resource: shikigami2011 Yamaimo ( Dioscorea japonica) is a Japanese yam belonging to Japan, Korea, China, Taiwan, as well as Assam. It’s typically described as hill yam, Japanese yam, Eastern Eastern hill yam, Jinenjo, shan yao, nagaimo, as well as Japanese cinnamon creeping plant. In Oriental it is referred to as cham ma 참마 as well as dang ma 당마. It expands wild in the hills of its indigenous Japan, where there is a practice of expanding both the Japanese yam as well as the Chinese cinnamon creeping plant. There, Dioscorea japonica

is called Yamaimo– essentially Japanese yam.

One of the most striking component of Yamaimo is its lengthy white root. Normally hidden 1 to 3 feet underground, they get to 1 to 3 feet long. They are polychromatic with a tan to creamy colored skin. A solitary seasonal climbing up creeping plant expands from each wild yam that gets to 10 feet high. The creeping plant’s fallen leaves are lengthened as well as appear like various other heart-shaped wonderful potato leaves. Yamaimo is dioecious as well as needs cross-pollination for the recreation of seeds. Women plants generate little string-like white or yellow blossom lots in late summer season that appear like oak plant pollen as well as scent like cinnamon. Male plants expand little roots over ground on the fallen leave axils of the creeping plant, referred to as air potatoes. Many located in The United States and Canada are male Dioscorea japonica


Yamaimo edible components consist of the root, as well as air potatoes (or seed), yet the root needs some handling prior to they can be taken in. The air potatoes can be baked as well as snacked on like edamame. The air root as well as tuberous origin have a neutral taste that typically functions as a binder for numerous foods– like soba noodles, for example.

The food chem of the yam is most intriguing. When consumed raw, they’re either shredded or grated to get rid of the coarse, indigestible components. Since they aggravate the skin, those that take care of the raw roots use handwear covers. They’re blended with various other flavors, as well as taste a little bit like a potato. Their structure is different depending on the prep work.

They’re utilized in wonderful confections for binding, as well as often they’re prepared right into a soft, sticky, as well as crispy pancake. They’re typically made right into dumplings tossed right into miso soup, as well as the unsafe structure or slimed structure of grated Yamaimo is exceptional in noodle meals of all kinds. Yamaimo is medical in China as well as it’s thought about wild hill medication in Japan where it is utilized to deal with digestion conditions, as well as to sustain kidney operating. Like various other wild yam types, it manages hormonal agents as well as is often utilized as contraception. In phyto-chemistry Dioscorea japonica

is thought about anti-inflammatory as well as antioxidant. In the Edo Duration in Japan cut yamaimo was contributed to bathrooms to advertise potency. Existing researches pioneered by Sei-Ichi Nakamura suggest dang ma 당마 (or cham ma 참마) has antimutagenic abilities through alcohol substances included in the plant’s chemistry. Dioscorea japonica

to Sei-Ichi Nakamura as well as links programs assure in the reductions of cancer cells. There are 4 approved official herb ranges of Yamaimo ( Dioscorea japonica

  • )– which equates in English to Japanese yam. A number of official herb ranges are nearly the same. They are as adheres to: In Japan, Korea, Ryukyu, Bonin, Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Zhejiang, as well as Taiwan: Dioscorea japonica var.
  • japonica In Assam: Dioscorea japonica var.
  • nagarum In Guangdong, Guangxi, as well as Taiwan: Dioscorea japonica var.
  • oldhamii In Anhui, Fujian, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, as well as Zhejiang: Dioscorea japonica var.


Growing Yamaimo

Plant each root in late springtime. Prepare a view with light, abundant, well-draining media, as well as plant it a minimum of 1 foot deep. 3 feet is finest. Or a barrel of some kind due to the fact that the wild yam of Yamaimo is delicate as well as can damage throughout the harvest cultivators plant it in a plastic tube in an increased bed. The location you grow it in ought to obtain complete sunlight or partial color. When you have actually picked as well as prepared the growing website, plant the root, as well as within a month or two you’ll have brand-new shoots in the kind of plants. Grown Yamaimo air potatoes can be grown likewise. Think about growing rooted stem cuttings in summer season if springtime is currently previous. We’ll talk about even more of the ins as well as outs of circulating Japanese yam later on in this item. When you grow your Dioscorea japonica

, give a strong trellis to sustain its higher development. This might be along a chain-link fencing, or through a wood trellis you have actually created. Initially, a solitary post will certainly be sufficient, yet as the creeping plant expands give even more assistance. Consider this choosing your growing website.

Back side of Dioscorea japonica leaf
Treatment The rear end of a Dioscorea japonica var. japonica fallen leave.

Resource: Shihchuan When you have a well-known Dioscorea japonica

creeping plant, you get on your means to gathering a Japanese hill yam. Since the root of Yamaimo takes a while to expand, you’ll have time to concentrate on taking care of the creeping plant.

Sunlight as well as Temperature Level Dioscorea japonica requires complete sunlight to partial color. Offer it a minimum of 6 hrs of sunshine each day. This cold-hardy Japanese yam can endure cool to -25 levels Fahrenheit as well as warm up to 100 levels. In the winter months, Dioscorea japonica

will certainly pass away back, yet the root will certainly remain to expand secure in the cozy planet. If you have especially cool winter seasons, hiding the yam much deeper will certainly assist safeguard it from the icy ground.

Water as well as Moisture The Japanese yam Dioscorea japonica requires constantly damp dirt to prosper. Water the plant daily in the early morning, making sure the leading 2 inches are damp, yet not soaked. A minimum of 1 inch of water each week is best. In the warm of summer season, water a little bit a lot more to sustain ample root development. When it rainfalls typically, Yamaimo does not require additional water in periods as well as locations. Soaker hose pipes

as well as drip watering are the most effective settings of sprinkling the Eastern Eastern hill yam, yet a slow-moving as well as regular flow from a hose pipe or watering can function equally as well, as long as the tool is well-draining as well as does not obtain also damp. Yamaimo is not dry spell forgiving.

Dirt Light, abundant dirt is best for Dioscorea japonica Grow this wild hill medication in a huge container if your media base is hefty clay dirt

If you wish to expand it in the ground, plant Yamaimo deeply, as much as 3 feet. A light fertile dirt that is neutral to slightly alkaline is best. Since an absence develops problems where illness can multiply, excellent drain is important. The pH array for expanding

Dioscorea japonica is 6.1 to 7.8. If your dirt is also acidic, Usage little quantities of yard lime. This glutinous yam requires damp dirt, so give some coco coir or sphagnum peat moss if your dirt has a difficult time holding dampness. Feeding Feed your Zhejiang Dioscorea japonica var. japonica

or your

Dioscorea japonica var. of an additional kind after 4 weeks of development, in very early summer season. Usage slow-release pellet plant foods that are full-spectrum, at 10-10-10 or 20-20-20. If you do feed later on in the period, utilize a 10-20-20 plant food which consists of the phosphorous as well as potassium web content to assist you generate big roots. Trimming

Trim your

Dioscorea japonica

var. to manage its spread. Cut components to educate the creeping plant’s form. Since the little air potatoes generated on male creeping plants as well as their duplicates can go down to the ground as well as multiply, take some time to get rid of those so they do not take control of. One more proper time to trim goes to completion of the expanding period in the loss. Get rid of all the fallen leaves when they have actually browned, as well as leave a little 5-inch stem at the base. Compost to safeguard it from the cold. Proliferation

Circulate any type of

Dioscorea japonica

var. from cuttings in very early to late summer season, depending upon where you live. Those in warm areas ought to grow cuttings in very early summer season, after rooting them in water in springtime. It will certainly take a minimum of 2 years for a considerable root to develop, which might require to be dug deep into as well as hair transplanted a lot more deeply after a couple of months of development.

Yamaimo and ayu (sweetfish)
Yamaimo is circulated is by the department of a mature root, or by seed, which originates from the edible air potato. The latter of these is one of the most typical kind of breeding in Japan. When you collect the light bulbs, lay them in a box in the color in a cozy, dark location. They will certainly grow by themselves in this manner. Kind out each seed that is off-and-on developed, as well as discard them. Take the remainder of the edible light bulbs as well as plant them a number of inches in the ground, making sure the seed grow is not barged in the procedure. In around 5 weeks you’ll have plants you can move to your recommended location for development. To separate this edible indigenous Japanese root, wait on the plants’ inactive period in winter months. Meticulously get rid of the root as well as suffice right into proper get rid of sufficient skin for ample sprouts to develop. Plant the root components deeply in late springtime in slightly alkaline dirts that are abundant as well as light. Train them onto a trellis.

Keeping as well as gathering Yamaimo with a little item of ayu (sweetfish). Resource: mmmyoso

The very best component of investing years expanding yams in the

Dioscorea category is gathering the root. It is fragile, so take some treatment in this procedure. Collecting Like various other participants of the Dioscorea

category, harvest your Yamaimo in the loss after 2 years of development from a plant. If you have actually prepared a plastic bathtub or high planter to expand this Oriental as well as japanese indigenous, merely topple the container as well as gradually dig deep into the root, making sure not to damage it while doing so. Indigenous

Dioscorea japonica

cultivators often grow them in the dust in plastic sleeves, making it simpler to take them out of the planet without damaging them. Do not clean the Yamaimo root up until you prepare to utilize it.

Harvest the little air root from Yamaimo throughout its development duration. Kind these, conserving the uneven ones for consuming, as well as the a lot more consistent ones for breeding.

Japanese yam tubers
Keeping The root maintains for 1 month kept in a great completely dry location, unwashed as well as covered in paper. Attempt the fridge for a pair of days if you do not have a great completely dry location in your home. Prepared Yamaimo maintains in an impermeable container in the refrigerator for 2 to 3 days. Powdered types of the yam maintain for 1 year in an impermeable bundle or container at area temperature. In grated kind, the Yamaimo maintains in the fridge freezer as well as utilized as required within 2 weeks. Some resources cut the yam as well as completely dry it, saving it at area temperature level in a mason container, though it’s vague how much time it can be maintained in this manner.


Little roots from Dioscorea japonica.

Resource: UnconventionalEmma

With Yamaimo, you will not come across several problems, aside from guaranteeing it has an excellent expanding tool as well as does not leave hand. Allow’s speak about a number of points you’ll wish to watch out for.

Expanding Troubles

Offer Japanese yams light, abundant, well-draining dirt. You’ll feat its development as well as produce problems where illness can take place if you grow your root in the planet in a location with hefty clay dirt. As the air potatoes go down as well as expand to the ground, select them up. Or else, you’ll be eliminating fools the list below springtime. Trellis your Yamaimo properly so it has excellent assistance. This assistance gives area for your air potatoes to expand as well as provides your root a lot more accessibility to sunlight as well as water. Attempt not to damage it when you’re gathering the root. Give it with a plastic tube, or sleeve, or plant it in an increased bed that can have a wall surface eliminated while you collect. Busted yams will certainly not last as long as undamaged ones.

Bugs Root-knot nematodes are the most awful insect for this yam. These little white to yellow worms pierce right into roots as well as lay eggs there. While they feed, they produce blemishes on each root, misshaping the chemical as well as molecular make-up of your harvest. Avoid nematodes with an advantageous nematode types due to the fact that it takes time to expand a root. When dirt temperature levels are in between 42 as well as 95 levels, use these weakened in water to the growing location. Comply with up with a 2nd application one to 2 weeks later on. This makes sure knot nematodes aren’t existing when you grow your root. If you’re not cautious, Birds

as well as

Yamaimo leaves
computer mice will certainly feed on your air potatoes. While this should not be a concern at a particular factor if you wish to conserve them, attempt an owl decoy to maintain birds away. Birds as well as computer mice might help you in maintaining the creeping plant under control.


In badly draining pipes dirts,

origin rot

can be a concern. The issue with this illness is you will not recognize it exists up until harvest. Yamaimo will certainly handle big stained smudges that create components of it to spoil prior to you can appreciate it. Late phases of the illness typically reveal themselves in storage space as the staining advances to a musty area. Do not grow your root where you recognize origin rot has actually existed. Give a tool that is light, abundant, as well as well-draining. Plant your root in a deep barrel of some kind if you’re uncertain regarding the growing location. There is no remedy for this illness. If your root obtains contaminated, circulate an air potato as well as begin once again.

Regularly Asked Inquiries

Young yamaimo leaves prior to they have actually completely broadened out. (*) Resource: plj.johnny(*) Q: Is Chinese yam the like Japanese yam?(*) A: Both the Japanese yam as well as Chinese plants generate a glutinous yam that is utilized mutually. They do share the very same category, yet what varies in between them is their types as well as their strength. Chinese yams expand in hotter environments, while the official herb ranges of Japanese yam have actually displayed cool strength. (*) Q: Just how do you consume yamaimo?(*) A: In Japanese food, it’s grated as well as made right into a paste that can be developed right into dumplings for soup. It’s likewise cut, covered in bacon, damaged, as well as deep-fried. It has wonderful applications! Since there are numerous official herb ranges indigenous in Taiwan, Japan, China, as well as Oriental food chem, there are several applications for these plants. One acquainted usage for the plants is to boost the structure of noodles.(*) The Environment-friendly Thumbs Behind This Post: (*).



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