When is yam harvested? Is yam harvested once a year?

1. Harvest Time

Yams are generally harvested from late October to November. After the stems and leaves of the above-ground part of the yam have withered, the tubers can be dug out. Since it is buried deep in the soil, you can also let it overwinter underground and dig it out in the spring of the following year. In addition, if it is grown in a greenhouse, the planting and harvesting time will change, and it can usually be harvested in June.

2. How to plant

1. Select materials: Yams are usually propagated asexually, and the planting materials are generally seeds or reed heads. The yam bean, also known as the yam bean, is its above-ground tuber. It can usually be collected during harvesting, but not all varieties have yam beans. The reed head, also known as the dragon head, is the part with buds on the top of the tuber. It has strong regeneration ability and the germination time is relatively short.

2. Land preparation and fertilization: Before planting yam, you need to fertilize the land first. The fertilizer at this time is base fertilizer, which needs to be able to provide nutrients continuously, so organic fertilizer is selected, combined with diammonium phosphate, urea and potassium sulfate. After applying fertilizer, till the soil so that the fertilizer is buried underneath. After that, you need to dig trenches. Since yam grows vertically, you need to dig loose trenches 1 meter deep to facilitate the growth of the plants.

3. Planting: Yam can be planted when the ground temperature reaches 9-10℃, usually in March and April in the south, late April in the north, and May in the northeast. Place the prepared reeds or reed heads in the ditch, keeping a distance of 25-30 cm. After planting, cover them with soil and flatten them.