I live in Humboldt County (Next to Eureka, Calif) and L. pardalinum is a native here. They normally produce several stalks. I have several other natives or crosses and so far haven't had any problems. I don't do anything special.
This year I had several blooms from pardalinum giganteum that I purchased last year from the native plant sale, and I also had blooms on several crosses I made with l. pardalinum x pitkinense.
