Talking Plant

Talking plant was a creation by Flora in Season 1.

Season 1
He makes his first appearance in the second episode of Season 1. While Flora was about to introduce herself to Bloom, she accidentally pushed him down. Later, he is tried to eat by Kiko and defends himself by hanging up Kiko. Bloom and Flora saved Kiko just in time. Flora scolded him but Bloom forgave him.

Winx Club: Premiere Special
The same happens what happened in the original series. But he was called magical plant instead of talking one.

Season 3
It's seen briefly when Flora is packing her clothes, Chatta and the plant help her.