Related Clues:

• Any '60s song
• Weed chopper
• Gardening tool that sounds like a disparaging term
• It can turn over a lot
• Hoagy Carmichael's 'Star Dust,' e.g.
• Tiller
• Do groundbreaking work
• But it's a goodie
• Nostalgic number
• Farming implement
• Song of yesteryear
• It's involved in groundbreaking events
• Prepare for planting, perhaps
• Turn up earth, in a way
• Any Beatles song