Setaria usually germinates and grows in spring and blooms in summer. The flowering period is from May to 10. Its flowers are different from ordinary flowers. Two or more spikelets gather on the vegetation. Flowers are small and green, panicles are cylindrical, and bristles are rough.

Usually green or brownish yellow, it looks like a dog's tail, so it is named Setaria viridis, which is distributed all over the country. It is a common plant and can also be used as pasture.

Extended data

Preventive and control measures

1. Rational rotation: This is an important agricultural measure to change the ecological environment of weeds and reduce the harm of weeds.

2. Physical weeding: The most common method is to cover with plastic film to increase the temperature of plastic film and soil surface, burn weed seedlings or inhibit weed growth.

3. Soil tillage: Using plows, harrows, cultivators and other agricultural tools to cultivate at different times and seasons can kill weeds.

4. Artificial weeding: Setaria viridis has a wide range of adaptation and many ways of transmission. Therefore, it is necessary to alternate 2-3 times around the apple orchard in time to eliminate weeds at seedling stage.

5. Chemical control: Herbicides such as Gramoxone, Lasso, prometryne and Diuron can be used for control.