This was very informative but I got here by following a link to soil amendments that increase acidity. I have an Azalea that was planted about 5 years ago and has been very stubborn. I added slow acting sulfur last year but the pH didn't budge. I have 3 Rhododendrons that flourish each year so I'm a bit perplexed.
This was very informative but I got here by following a link to soil amendments that increase acidity. I have an Azalea that was planted about 5 years ago and has been very stubborn. I added slow acting sulfur last year but the pH didn't budge. I have 3 Rhododendrons that flourish each year so I'm a bit perplexed.