Grades and Requirements for Parsnips Application 169. The grades and requirements set out in sections 170 to 173 apply to parsnip varieties grown from Pastinaca sativa, parsnips with tops being excluded. Grades and Grade Names 170. The grades and grade names for parsnips are Canada No. 1 and Canada No. 2. Requirements for All Grades 171. In addition to the requirements for each grade and subject to the general tolerances set out in sections 174 and 175, parsnips of all grades must • ...