I have done some research on deer deterents, and the cheapest way I have found & it seems to work, is making a homemade batch.
Recipe: 1 whole egg in 1 liter of water with a small amount of natural soap (Murphy oil), so it will stick, & a little of hot pepper. Blenderize it & I spray that on to the leaves of roses & fruit trees & just about anything you think they will eat. No ill effects on the plants I have ever seen. Reapply maybe every month or so.
I have never seen deer eat Lewesia, but I have a buffet @ our house.
Good luck