Here are some nifty uses of vinegar in your garden:

• Remove white salt build up on old clay pots
• Kill grass in between bricks and sidewalk cracks.
• Kill weeds
• Ant deterrent
• Cat (yes, feline) deterrent (if anyone knows the science behind this, please comment!)
• Freshen newly cut flowers (2 tbsp. of vinegar + 1 tsp. of sugar + 1 quart of water)

Via: LifeHacker and Frugal Gardening