An Etymological Dictionary of the German Language/Annotated/lodern

by Friedrich Kluge

lodern, verb, ‘to blaze, flare,’ first occurs in early Modern High German; literally perhaps ‘to spring up (of plants}’; a Low German word. Compare Westphalian lodern, ‘to grow luxuriantly,’ to which Old High German lota, ‘young shoot,’ is allied; for the root lud see under Leute.