How do you raise the ph of soil?

To change the color of my azaleas I need to change the ph of the soil. How do I do this?How do you raise the ph of soil?
your garden center has amendments for this very purpose. A good salesperson will tell you precisely what you need. it'll be something to sprinkle on the ground. Nothing complicatedHow do you raise the ph of soil?
Lime will raise the soil pH. Be very careful in applying it though.
http://www.allotment.org.uk/articles2/So

Here is a web page you could browse, I hope it helps., but do have your soil tested
to raise the ph , lime is added, but for azaleas lime is a no no, get a reading ,if 3.5 - 5.5 lea