What Are Loose Impediments in Golf?

Answer:

“Loose impediments” are natural objects such as stones, leaves, twigs, branches and the like, dung, worms and insects and casts or heaps made by them, provided they are not fixed or growing, are not solidly embedded and do not adhere to the ball.

Sand and loose soil are loose impediments on the putting green, but not elsewhere.

Snow and natural ice, other than frost, are either casual water or loose impediments, at the option of the player.

Manufactured ice is an obstruction.

Dew and frost are not loose impediments.