You can grow Banlangen (Isatis indigotica, woad) in a pot at home, and it works well for preventing colds.

Banlangen can clear heat and relieve cough, eliminate phlegm and remove toxins, making it a practical medicinal herb. It can not only treat and prevent colds, but also prevent mouth ulcers caused by bacteria, treat oral bacterial diseases, and at the same time prevent hepatitis bacterial infection. We can grow a pot of Banlangen in a flowerpot. Grow a pot of “Banlangen” at home, and it works well for preventing colds!

1. How to grow Banlangen

1. Sowing

When planting Banlangen, sowing is generally used, because this gives a relatively high survival rate and the yield is also considerable. Banlangen seeds are usually sold on the market, and interested flower lovers can go buy some. Before sowing, we can first soak the seeds in water, which helps sprout them, so they will take root and sprout faster afterward.

2. Soil

Banlangen has very low requirements for the growing soil; even ordinary saline-alkali land can grow it well. Because Banlangen grows relatively fast and has deeper roots, it is best to choose a larger flowerpot when planting, which saves the trouble of repotting later. Next, when sowing, pay attention to the spacing, and you can also apply a little organic fertilizer as a base fertilizer. After planting, water it a little, place it in a spot with scattered light, and then you can wait for it to take root.

3. Daily care

The daily care steps for Banlangen are very simple. It likes light, so when growing it at home, remember to keep it in sufficient light every day; the more sufficient the light, the better it will naturally grow. However, when watering Banlangen, be careful not to water too much. It is better to let it be a bit dry than to cause water to accumulate in the pot, otherwise, if the roots rot, all that hard work will be wasted.

2. The effects and uses of Banlangen

1. Treatment

Banlangen is a medicinal material with mild properties that is widely used in people's daily lives. It usually can clear heat and relieve cough, eliminate phlegm and remove toxins, making it a relatively practical medicine. An oral granule made from Banlangen for treating colds can be drunk after being soaked in water. It can both treat mild colds and prevent bacterial infection and colds. Many times people are willing to drink some Banlangen cold granules in advance during winter, the season when colds are frequent, to prevent them.

2. Prevention

Banlangen can not only treat and prevent colds, but also prevent ulcers caused by bacterial infection in the mouth, treat oral bacterial diseases, and at the same time prevent hepatitis bacterial infection. Because Banlangen has mild medicinal properties, it is deeply loved by people. Although Banlangen has many medicinal benefits, excessive use by children should be avoided. As the saying goes, “every medicine has some toxicity”; long-term use of Banlangen by children will cause certain harm to their bodies, damage the body's immune mechanism, and make them prone to developing dependence on the medicine.

3. Precautions

For people with different constitutions, the use of Banlangen will also differ accordingly. For people with a hot constitution, Banlangen can effectively prevent colds. But for people with a cold constitution, excessive use of Banlangen can easily cause diarrhea, make the body feel uncomfortable, and make the body even more deficient and cold, so before use it should also be determined according to one's own situation.

For children, the amount of Banlangen used also needs attention, and at the same time you should pay attention to whether you have an allergic constitution. Banlangen can cause physical discomfort in people who are allergic to it, often bringing adverse effects, so it should be used according to a doctor's orders.