Azaleas - Knowledgebase Question

Name: Neil C Winslow
Oklahoma City, Ok
Question by neilzp2
February 7, 2009
I have several gallons of generic Vinegar. I have dozens of azaleas. Our Oklahoma soil is very alkaline so I add peat moss and peat compost all the time. Would I increase the acid content in my soil safely by sprinking Vinegar into my composting oak leaves? And, or, could I dilute the vinegar greatly and water my azaleas with it? It sounds deadly to me. Okay to shorten my question, if needed

Answer from NGA
February 7, 2009


Although vinegar is acidic, there have been no studies done as to how a vinegar solution might affect plants over the long term. Vinegar doesn't last very long in the soil - only a few days - so you'd need to mix a new vinegar solution each time you watered your azaleas. I think I'd stick with peat moss and the acidified Azalea/Rhodendron fertilizers available at garden centers. If you decide to experiment with vinegar, 2 tablespoons diluted in 5 gallons of water is the ratio. Best wishes with your azaleas!

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