Some flowering plants are "self-cleaning," which means that as the flowers fade, they fall from the plant naturally. Other flowering plants will not release the faded flowers, and a gardener must remove them to keep the plant looking neat and attractive. This process is called "deadheading." Not only does deadheading keep a plant tidy, it also encourages the plant to continue blooming because new buds are encouraged when the gardener deadheads the spent blossoms.
Watch the flowering plants daily during the blooming period so you will see when flowers fade and need to be removed.
Clip the blossoms and the stems off at the base of the stem where it intersects with another lateral flower or a lateral bud. Lateral flowers and lateral buds are flowers and buds that are growing on side stems and not the main stem of the plant. This will eliminate unsightly blossomless stems from the perimeter of the flowering plant.
Discard the spent blossoms in the trash instead of a compost pile. The seeds in the spent flowers may sow themselves in the compost pile if you compost the blossoms.