The latest requirements of Rehmannia glutinosa on growth environment

rehmannia is a famous medicinal material, is Scrophulariaceae rehmannia medicinal materials. It is often found wild on low and medium-altitude hillsides and can sometimes be seen on roadsides. In fact, its underground roots are yellow and white, so it is called rehmannia. What kind of specific growth environment is the yellow grass, only know that there will be its shadow on the wall. Therefore, this rehmannia herb must be a plant specially adapted to the environment.

1. Environment

Mainly distributed in the north, Henan, Hebei, Liaoning, Inner Mongolia, northwest Shaanxi, Gansu, southern Jiangsu, central Hubei region. Some other areas may also exist, just a large distribution. It often grows on hillsides, and the more barren hills it grows. It may grow on the roadside and wall of the flat ground.

2. Soil

Mainly like to grow in fertile sandy loam, such loose soil permeability, no ponding, suitable for underground root swelling. Clay is airtight, loess is barren, acid-base is acidic. Rice fields are sticky and heavy, so they are not suitable for rehmannia cultivation. The land at the foot of the mountain where corn and soybeans are planted is very suitable for planting rehmannia. But too dry, attached to no water source, watering into mud soup soil is not suitable.

3. Light

Sun-loving plants must receive sufficient light, and no tall trees and plants can block the sun during their growth. Intolerant of shade, large forests, trees, shrubs do not grow from the inside, generally grow in the sunny hillside weeds. Or green grass. General light can be accepted, summer strong light, not affected.

4. Temperature

It needs to reach a certain temperature to germinate. If it is lower than 10 degrees, it will not germinate. To germinate at temperatures above 12 degrees Celsius, seedlings need to last for more than 12 degrees Celsius for about a month. April to May in the south is the most suitable temperature for germination and growth, about 20 to 28 degrees. The optimum temperature will shorten the germination and emergence time.

5. Nutrition

rehmannia like fertilizer, growth period to many topdressing, but topdressing so that soil concentration, must be combined with watering to help absorb. However, rehmannia root system is very poor, afraid of ponding floods and drought, so you can fertilize and water a few times, keep fertilizer and moisture. No chemical fertilizer, use fermented livestock manure.

The original environment of rehmannia is sunny hillside at middle and low altitude. According to its characteristics, the planting and growing environment of rehmannia is established. This will provide a targeted environment. However, if the environment is limited, in fact, rehmannia adaptability is still very strong.