Where does “Trestian” come from?

Trestian (Romanian) comes from Romanian Trestia, from Romanian trestie, from Proto-Slavic trъstьje, from Proto-Slavic trъstь — cane.

Ancestry of “Trestian”, step by step

StepLanguageWordMeaning
1RomanianTrestia
2Romaniantrestiereed, particularly the common reed; cane,...
3Proto-Slavictrъstьje
4Proto-Slavictrъstьcane
Every word from Proto-Slavic trъstьEvery word from Proto-Slavic trъstьjeEvery word from Romanian trestie