Yes, Della, my martagon Lily is in a pot with alkaline soil. The last two seasons I have been purchasing acid soil for my Oriental Lilies and for my L. pardalinums. The L.O. were not doing bad in alkaline soil, but the pardalinum did not like it at all.
Southern Chile and its rain forests do have acid soil (where Lapageria rosea can still be found growing wild), but the central area, where I live, has alkaline soil.