Parsley (Petroselinum crispum) is a vegetable from Umbelliferae family (or Apiaceae) that eats leaves as a salad. Although parsley vegetable to produce small areas our country, it has started to make production in large and larger areas in recent years. This study aimed to determine the strength of Parsley (Petroselinum crispum) specifications for mechanical harvesting. For this purpose, properties as the maximum force, stress in the maximum force point, work at maximum force point, shearing force, deformation at maximum force, bioyield force, and shearing stress of Parsley (Petroselinum Crispum) stalk, flower have determined. Average values for maximum force, stress and energy in maximum force were determined as 4.535.N, 0.566 MPa and 0.015 J at stalk, respectively. The shearing force and shearing stress were found to be as 1.170 N and 0.14 MPa, respectively. Average values for bioyield force were determined to be 3.628 N. These features can be used in determining the design and operating conditions for the mechanical harvester cutting blade.