Where does “kuloruoho” come from?

kuloruoho (Finnish) comes from Finnish ruoho, from Proto-Finnic rooho, from Proto-Germanic grasą, from Proto-Indo-European ǵʰreh₁- — to become green, grow; to grow; to green, to grow.

Ancestry of “kuloruoho”, step by step

kuloruoho traces back through two separate lines of ancestry.

via Finnish ruoho

StepLanguageWordMeaning
1Finnishruohograss mass noun; blade of grass individual specimen
2Proto-Finnicroohograss
3Proto-Germanicgrasągrass
4Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow

via Finnish kulo

StepLanguageWordMeaning
1FinnishkuloDry, dead grass from previous summer; wildfire
2Proto-Finnickulodry grass from previous year
3Proto-Indo-Europeankeh₂w-—
Every word from Proto-Indo-European ǵʰreh₁- →Every word from Proto-Germanic grasą →Every word from Proto-Finnic rooho →