せいたかよもぎじゃなかったです
背高蓬じゃなかったです
seitaka yomogijanakattadesu

Noun
Desu Copula

The polite, past negative form of せいたかよもぎ

1. Wasn't tall.; Wasn't high.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana