According to life cycle of weeds, which class does a buffet grass is belong to?

Buffel grass (Cenchrus ciliaris) is a perennial grass that belongs to the class of weeds known as invasive or noxious weeds. These types of weeds have a high reproductive capacity and can quickly spread and outcompete native vegetation, causing harm to ecosystems and agriculture. Buffel grass is considered a major invasive species in many regions, particularly in Australia and the southwestern United States.