Which plant, Enkianthus or Scadoxus, is small enough to be grown as an ornamental plant in containers?
Enkianthus: Enkianthus is a genus of shrubs or small trees in the heath family (Ericaceae). Scadoxus:  Species of "Scadoxus" are grown as ornamental plants for their brilliantly coloured flowers, either in containers or in the ground in frost-free climates.
Scadoxus