This section is about weeds and their place in the garden, weed biology, weed prevention, and weed control. Annual weeds reproduce only by seed and live just one season. In a period as short as a few weeks or months, they germinate, shoot up, blossom, set seed and die. Winter annuals germinate in the fall, mature in the winter, and die early summer. The seeds remain dormant until the fall.
Summer annuals germinate in the spring, mature in the summer, and die in the fall.
The seeds remain dormant until the spring. Annual weeds characteristically produce a great number of seeds. These seeds have the ability to become established in a wide range of environments and to remain viable over an extended period of time. Control of annual weeds, for the most part, is dependent upon the control of the seeds. Biennial weeds reproduce by seed and live for two growing seasons.