Hi Cody, I have experimented growing serpentine plants in native soils for some of the more difficult species. In short, the plants were much happier when not in serpentine. In the wild, they tolerate but aren't really that happy in the soil. Calochortus bulbs should not desiccate -- I let them go bone dry in the summer in northern California. What I would suggest is not to worry about native soils and use a good well-draining mix. Climate/temperature is more critical so pay closer attention to that. Nhu On Fri, Jun 9, 2017 at 9:37 AM, Cody H <codiferous@gmail.com> wrote: > Do folks grow these types of bulbs in clay soil > in pots? If not, what kind of soil do you use? Do you add serpentine rock > to the potting mix? How do you protect against dessication during the > summer dormancy? Any advice would be appreciated! >