First of all, we should choose a relatively flat and sunny place. After selection, we have to deal with the soil, such as letting the sun dry for a long time, and deep ploughing. In addition, we need to mix some fertilizer, such as fertilizer sold on the market or animal manure, but it is better than animal manure.
When the pods turn yellow, cut them off, collect the seeds, and remove the impurities from them. Select those full and healthy seeds, and then carry out further treatment. Prepare warm water up and down to 45 ℃. Immerse the seeds and soak them for about a whole day. Remove and dry the surface. If they are not easy to absorb water during the treatment, you can use sandpaper to rub their skin, and then soak them, so that the expansion effect is better after absorbing water.
First of all, we need to know the right time for sowing. In general, we will choose late spring to early summer, the method is "drill". The distance between each row is about 35 cm, and the distance between seeds is about 20 cm. Then, spread them as evenly as possible. After spreading, cover about three centimeters of soil, and pour enough water. After that, keep the soil moist and wait for the seeds to germinate.
When the seedlings grow to about five centimeters, they should be treated with thinning to remove the weak ones. When it grows to about 40 cm, it needs to be earthed. In addition, weeding should also be carried out in a timely manner. In the rainy season, water should be discharged in a timely manner. In case of drought, water should also be used.
