Possible Clues:

• Citrus fruit
• You need a wee D to learn the last of this
• Sounds we'd start to mend the hole at the top of it
• By the sound of it, we'd begin to mend it (6)
• Grass near mill in Donegal
• A grass commonly found growing as a weed in grain fields
• Curse the Spanish grass
• Rye grass
• Lander crashing in grass
• Mostly cursed large weed