Grades and Requirements for Greenhouse Cucumbers Application 148. (1) Subject to subsection (2), the grades and requirements set out in sections 149 to 153 apply to cucumber varieties grown from Cucumis sativus in artificial conditions under glass or other protective covering. (2) The grades and requirements referred to in subsection (1) do not apply to cucumbers for packaging in a hermetically sealed package, freezing, concentrating, pickling, or otherwise to assure preservation during ...