Digha Nikaya 1:1422
SUJATOTena kho pana samayena kusinārā yāva sandhisamalasaṅkaṭīrā jaṇṇumattena odhinā mandāravapupphehi santhatā hoti.
Now at that time the whole of Kusinārā was covered knee-deep with the flowers of the Flame Tree, without gaps even on the filth and rubbish heaps.