What are the latest propagation methods for Stemona?

Stemona, also known as Baitiaogen, Jiuchonggen, etc., is a perennial herbaceous plant. Its underground rhizome has the effects of moistening the lungs and relieving cough, killing insects and relieving itching, and is mainly used to treat chronic bronchitis, pulmonary tuberculosis, and parasitic diseases. So how should Stemona be propagated? Let's take a look.

1. Seed propagation

① Seed treatment

Stemona is a perennial herbaceous plant. It generally needs to grow for 3 years before it blooms and bears fruit. Each year in autumn, from July to September, its aboveground stems and leaves begin to wither and turn yellow, and the fruit also changes from green to yellowish brown. When the seeds are nearly dark purple, they can be picked. Seeds from flowers and fruits produced later will not mature. After harvesting the fruit, place it in a ventilated and dry place to dry for a few days. After the outer shell of the fruit naturally cracks, the seeds will fall out on their own. At this time, remove impurities, select the seeds, dry them, and store them for later use.

② Sowing and raising seedlings

Sowing can be divided into spring sowing or autumn sowing. According to the climate conditions of the north and south, generally the south uses autumn sowing, while the north uses spring sowing. Spring sowing is carried out from March to April, using the method of raising seedlings in a seedbed. On the seedbed, open furrows and sow in rows with a row spacing of 25 cm and a furrow depth of 7-9 cm, and evenly scatter the seeds into the furrows. After sowing, apply dilute manure water, cover with fine soil, then cover with grass to keep warm and moist. Seedlings can emerge after about 15 days. After the seedlings are fully grown, remove the covering grass and carry out intertillage and weeding measures. Thin the seedlings according to the growth height and time of the seedlings. Control the plant spacing at 2-3 cm and topdress in time. After one year of cultivation, they can be transplanted. Autumn sowing is carried out from September to October, and the method is the same as spring sowing. Seedlings emerge in the spring of the following year and are transplanted in autumn.

2. Division propagation

Division is asexual propagation. Each year after harvest, cut off large rhizome pieces for medicinal use, leaving small root pieces as seed. Based on the number of root buds on the small rhizome pieces, divide them into hosts. Each plant must have 1-2 strong buds and must also carry 2-3 small root pieces. When planting, dig holes at a plant and row spacing of 25×25 cm, plant one plant per hole, place the root buds upward, and plant vertically. Do not plant diagonally or upside down. Autumn planting generally emerges in February of the following spring. About 15-20 days after emergence, the seedlings can be fully grown. At this time, strengthen seedling-stage management, and they can be transplanted in autumn.

The above is an introduction to the propagation methods of Stemona. We hope it can help you. To learn more related knowledge, please stay tuned to us.