Where does “Caesar weed” come from?

Caesar weed (English) comes from English weed, from Middle English weed, from Old English wēod, from Proto-West Germanic *weud — weed (unwanted plant).

Caesar weed (English): Urena lobata, an annual undershrub with pink...

Definitions

  1. Urena lobata, an annual undershrub with pink...

Ancestry of “Caesar weed”, step by step

Caesar weed traces back through two separate lines of ancestry.

via English weed

StepLanguageWordMeaning
1EnglishweedAny plant regarded as unwanted at the place...
2Middle Englishweed—
3Old Englishwēodweed
4Proto-West Germanic*weudweed (unwanted plant)

via English Cæsar

StepLanguageWordMeaning
1EnglishCæsarAlternative spelling of Caesar
2LatinCaesarJulius Caesar; emperor
3Latincaesariesor hair
4Proto-Indo-Europeankéysero-hair
Every word from Proto-West Germanic *weud →Every word from Old English wēod →Every word from Middle English weed →