Thanks, Dirtdorphins.
Our soil is acidic enough that lime is applied to crop fields, so I'll definitely not shy away from using it. Crushed limestone is readily available here, and it's what we use for our drive, so that's also a definite plus. In fact, now that I'm thinking about it, an area near the house was mulched with it and that's where the Aethionema schistosum, Edraianthus tenuifolius, dianthus and chicory are already doing very well.
