Possible Clues:

• Mistake over blocking comedy sketch displaying root vegetable
• Margin containing recipe associated with English root vegetable
• Plant starts to ruin everything in border
• Plant cultivated in parts of Europe for its edible carrot-like roots
• Vegetable hoax with sin covered over
• Plant of parsley family with edible root; striker (anag.)
• Risk cooking (and half regret) exotic vegetable
• Re-entering, circumvent water plant
• Plant of parsley family
• Old World plant with edible tuberous roots