http://www.espoma.com/p_consumer/pdf/pr ... acidif.pdf This is what I added to my new blueberry spot last year to lower the ph. I also found that my home-made compost had a low ph, so I added that too. As I recall, it took a pretty good amount to make a change to the overall ph of the garden area. Maybe it will take less to change the ph of pots.
Maryann I would hug you if I could reach you! I believe I saw this at Lowe's a couple of weeks ago. THANK YOU THANK YOU THANK YOU!
Episoma makes pretty good (if old fashioned) stuff. I bet there are directions on the bag for application. Start out slow (maybe half recommended strength) and if leaves on Blueberry become bronze colored, repeat.
DD, I'm glad that info was helpful. I went through intense blueberry anxiety last year and received lots of good advice from our friends here at GS. Mine were little teeny things last year -- they haven't made a showing yet this year but I am hopeful they will do well. Good luck with yours, DD.