Annual weeds:

These weeds complete their life cycle in one growing season. They grow from seed, mature, flower, produce seeds, and die within a year. Examples of annual weeds include crabgrass, chickweed, and pigweed. Annual weeds can be controlled by hand-pulling or using herbicides.

Perennial weeds:

These weeds live for more than one growing season. They may die back to the ground during winter but regrow from roots or underground stems in the spring. Examples of perennial weeds include dandelion, quackgrass, and bindweed. Perennial weeds are difficult to control as they have extensive root systems that allow them to survive adverse conditions.

Biennial weeds:

These weeds complete their life cycle in two growing seasons. In the first year, they grow vegetatively and store food reserves in roots or underground stems. In the second year, they flower, produce seeds, and die. Examples of biennial weeds include mullein and bull thistle.

Noxious weeds:

These are invasive plants that can cause harm to humans, animals, or the environment. They may be poisonous or have aggressive growth habits that can displace native plant species. Noxious weeds are regulated by state and federal laws to prevent their spread.