Where does “yellowweed” come from?

yellowweed (English) comes from English yellow, from Middle English yelow, from Old English ġeolu, from Proto-West Germanic gelu, from Proto-Germanic gelwaz, from Proto-Indo-European ǵʰelh₃wós, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.

yellowweed (English): Any of several plants with yellow flowers

Definitions

  1. Any of several plants with yellow flowers

Ancestry of “yellowweed”, step by step

yellowweed traces back through two separate lines of ancestry.

via English yellow

StepLanguageWordMeaning
1EnglishyellowHaving yellow as its color; Lacking courage;...
2Middle Englishyelowyellow, yellowish, gold; yellow-coloured;...
3Old Englishġeoluyellow
4Proto-West Germanicgeluyellow
5Proto-Germanicgelwazyellow
6Proto-Indo-Europeanǵʰelh₃wósyellow, green
7Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

via English weed

StepLanguageWordMeaning
1EnglishweedAny plant regarded as unwanted at the place...
2Middle Englishweed
3Old Englishwēodweed
4Proto-West Germanic*weudweed (unwanted plant)
Every word from Proto-Indo-European ǵʰelh₃-Every word from Proto-Indo-European ǵʰelh₃wósEvery word from Proto-Germanic gelwaz