1. Soil: Dihuang likes fertile soil, but clay laterite and loess soil are not good. Generally, sandy soil is the most suitable
2. Water content: the root system of Rehmannia glutinosa is poor in water absorption, and excessive water content will cause its root and stem to rot. as long as the soil is kept moist, it can be watered less. Do not have the appearance of water, in the rainy season, to timely drainage.
3. Nutrients: after farming, the Rehmannia glutinosa should be fertilized once. Generally, chicken, duck, pig manure and human manure should be used. The rest of the time basically every half a month fertilization can, so more conducive to the growth of Rehmannia
4. Sunshine: Rehmannia glutinosa is a kind of plant that likes sunshine. It should have a good sunshine environment during its growth period. When choosing the land for planting, do not choose the place close to the high stem crops, which will block the yellow light of the place. But it is also not resistant to strong light, which needs to be noted
1. Weeding and pruning: with the growth of Rehmannia glutinosa, some weeds will grow in the soil. At this time, the weeds need to be treated in time, or the weeds will absorb the nutrients in the soil. If the nutrients absorbed by Rehmannia glutinosa are not enough, the growth rate will be affected. But also the dead branches and rotten leaves of Rehmannia glutinosa to be pruned in time, can also reduce nutrient loss.
2. Propagation: the rhizome is generally selected for propagation of Rehmannia glutinosa, and the robust rhizome is selected. The rhizome is dug and folded into 4-5cm short joints. After a little air drying, transplanting to the soil with sufficient nutrients, pay attention to drainage when it rains, and then transplanting in spring.
1. Spot blight: there will be spot blight and Fusarium wilt after planting the Rehmannia glutinosa. This time, we need to use multiple volume Bordeaux spray to spray, and pay attention to ventilation.
2. Insect damage: cotton spider and nymphal butterfly are common after planting. At this time, you need to spray them with thiamine phosphate and trichlorfon.
1. How to spend the winter: in winter, potted plants need to be moved to indoor breeding, and the temperature should be well controlled to avoid frostbite of rehmannia.
2. Whether it can be put indoors: it can be cultured indoors, but in consideration of the number of flowers opening, we need to appropriately increase the sunshine exposure, so as to make its flowers more bright.
