Vinegar in water
I haven't tested the soil yet, and I will soon, but I was under the impression that soil around town here is naturally somewhat acidic. However, my ASB that pushed a few blooms out last Fall was pink. I was hoping for bluer ones, and I have 8 masjas that I would LOVE to grow out a deep purple.
Then I read elsewhere that Houston's water is somewhat alkaline, so I am wondering if that may have offset any soil acidity. Anyhow, until I get the soil tested, I was wondering if a "trick" I read might be a good idea. Namely, to add some vinegar to the water used on the hydrangeas, to lower the pH.
Anyone tried this with success?