C. chrysocoma sericea

(syn. C. spooneri ) Pure white 1.5-2" (4-5cm) flowers in May and June. Mature height 14-20'(4-6m) (all chrysocoma's will have severe frost damage when minimum temperatures fall below 0 to -10F (-12C to -18C). The plants will probably survive, however, the tops will be burnt off and the plants will not bloom.) Pruning group A.