かわらよもぎでしょう
河原蓬でしょう
kawarayomogideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of かわらよもぎ

1. Probably a smartweed.; Probably a polygonum.

Polite
Presumptive
Conjecture
Usually Written in Kana