Test your soil. Put some dirt into a container and pour about 1/2 cup white distilled vinegar into it. If it fizzes or bubbles up, it is too alkaline. Simply add peat moss or sulfur to make your soil pH more neutral.
Give acid-loving plants like azaleas, rhododendrons, hydrangeas and gardenias a little help by watering them with a white distilled vinegar solution now and again. Consider adding a cup of white distilled vinegar to a gallon.
Keep cut flowers fresh. Mix 2 tablespoons apple cider vinegar and 2 tablespoons sugar with the vase water before adding flowers. Be sure to change the water every few days to enhance your flowers’ longevity.
Get rid of the water line in a flower vase by filling it with a solution of half water and half white distilled vinegar, or by soaking a paper towel in white distilled vinegar and stuffing it into the vase so that it is in contact with the water line.