Interesting! The majority of my plants are daylilies and irises, and they have different choices, but it is a range of alkalinity vs. acidic (as in Thomas's vegetables). Nonetheless, I think finding a county extension agent or going to the nearest university would be a good idea, but not as easy as the simple test we've been talking about. So for me, I've got county extension agent and university on my LONG things to do list, but if the simple test comes in first, it sure won't hurt to run it!
You people are amazingly helpful and knowledgeable. THANKS!!