Possible Clues:

• Variety of plum
• Type of plum
• Fruit like a small plum
• Fruit garden oddly busy
• Garden fruit
• Fruit and raw egg -- a disaster
• 'How to get your putting sort of plumb, by the sound of it (9)'
• Finally putting sign up again for fruit
• Such a summer novel is joke, novelist admitted
• Still unripe, with egg a little sweet