white Vinegar to feed plants - Knowledgebase Question

Clinton, Ma
Question by symeriajr1
May 26, 2009
what effect does white vinegar mixed with water have on perennial and annuals? I used a small porton on my house plants 2 weeks ago and they seem to be more vibrant and colorful. I know white vinegar mixed with water is used to kill unwanted grass and weeds. I need to know the affect it would have on my outdoor plants, roses, hydrangea, peony. sedums, hostas, lilys and crype myrtles.


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Answer from NGA
May 26, 2009

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Vinegar will change the soil pH slightly (it is acidic) but unless used full strength it should not harm your plants. According to the Vinegar Institute, "in hard water areas, add a cup of vinegar to a gallon of tap water for watering acid loving plants like rhododendrons, gardenias or azaleas. The vinegar will release iron in the soil for the plants to use."

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