Quote Originally Posted by JackdaWack
5?? wow thats really low for soil.
It depends Jack. If a person is using readily available potting soil like Scott's or Miracle Gro (which is made by Scott's), the 800 helpline will tell you that their preparations have a pH of 5.0. How do I know this? I called the number.

As for other commercially available preparations, I have no idea.