Paj Primrose belongs rau tsev neeg Primrose. Hauv qhov xwm txheej, lawv tuaj yeem pom hauv Africa, Europe, Central Asia thiab Middle East. Nyob rau lub caij nplooj ntoo hlav, lub paj no yog ib qho ntawm thawj qhov tshwm sim los ntawm hauv qab daus. Nyob rau hauv tim Nkij teb chaws, primrose yeej ib txwm raug suav hais tias yog cov nroj tsuag tshuaj. Thiab cov Germans nyob rau hauv ancient sij hawm ntseeg hais tias primrose yog tus yuam sij. Hauv Tebchaws Europe, cov nroj tsuag no tau tshwm sim nyob rau xyoo pua 16th. Tab sis lub paj primrose tshwj xeeb tshaj yog hlub hauv tebchaws Askiv. Muaj kev nthuav qhia txhua xyoo nta