This agriculture extension service publication from Pennsylvania State University examines weed control and identification in vegetable crops. Contents include: (1) Types of weeds; (2) Reducing losses caused by weeds, general control methods and home garden weed control; (3) How herbicides are used; (4) Specific weeds in vegetable plantings; and (5) Terms used in selective weed control. Additionally, this publication is written for the home gardener and does not discuss specific herbicides. (MR)