Bees love Lavender, all species of Lavender of which there are about fifty I believe. There are also various cultivars referred to as Lavandin or Lavendula x intermedia i.e. crosses of English Lavender (L. angustifolia) which is actually French with Portuguese Lavender (L. latifolia) which is native to Portugal, Spain and France. These hybrids produce a good deal more aromatic oil than the straight species- and attract even more bees, probably cause and effect.