From all of the practical experience you all have gained growing lilies over the years, how important do you think soil pH is for successful establishment and growth of lilies? A lot of lily books, for example, state that Lilium henryi and L. candidum are only happy in alkaline soils whereas L. auratum and L. speciosum will perish if the soil is not acidic.
What are some ways you have found to manipulate soil pH, or even the lilies themselves, to successfully culture the more "nitpicky" species and hybrids?
