The Arisaemas are a genus often associated with Meconopsis rich gardens. Many come from China and one of the best is Arisaema candidissima. This normally is relatively dwarf and late through (mid to late June) but rapidly comes into flower. There are many larger species but most of these suit a large woodland garden. A few years ago white and yellow forms of this were offered by a Chinese nursery but both proved to be the usual pink form