Possible Clues:

• Go over plot with peevish person
• Ill-tempered person
• Punch -- way to constrain constant complainer
• Grumpy chap to pass through local area
• Grumpy type to negotiate plot
• Mix and fix curmudgeon
• One who's never happy to go over temporary repair
• Traverse vegetable plot perhaps, finding old grump
• Bad-tempered fellow from Scottish shire with penny in bag
• Churl to reach other side of manor