The growth period of the iron stick yam is usually from April to October, it can be grown, a piece of yam land, after planting yam, usually 3-5 years will not be planted again yam, because the fertility is not enough, the nutrients have been absorbed almost.

Therefore, the next year is the need to change a piece of land that has not been planted with yam to plant Wenxian iron stick yam.

Wenxian iron stick yam price, than the market price of yam, this is also one of the reasons.

If you are talking about medicinal value, you need to differentiate according to the varieties of yam: Wenxian yam is divided into sandy land and kiln land, and some of the string planting of the land of the two together.

Which, sand land is common, relatively straight, medicinal value is not as kiln land.

The kiln-land ones are curved and curved like the wild ones. In the Ming and Qing dynasties used to do tribute, have the spleen and stomach tonic kidney effect.

The two-heat soil is a string of species, the medicinal value of the middle.

I hope these answers can help you. I hope you can adopt! If there are any questions, you can continue to follow up.