せいたかよもぎじゃありません
背高蓬じゃありません
seitaka yomogijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of せいたかよもぎ

1. Not tall and slender.; Not a tall weed.

Negative
Polite
Terminal Form
Usually Written in Kana