Possible Clues:

• The Theatre Cat (T. S. Eliot); an edible plant
• Plant with edible spears
• Plant a revolutionary drug around spring
• When even America protects silver plant
• How father put sugar over the vegetable shoots?
• Make sweet turnover to follow a spring vegetable
• Vegetable delicacy
• A yard on board, and in Ireland a whole stick of it
• Vegetable with spears and tips
• Food, for example, South American country's always ignored