Nice game, thank you.
It's a risky decision to tell the story from only one side of the conversations but it worked out.
Although it remains a mystery what caused moving in to a different place. I guess [SPOILER] the belongings of a male who was close to the protagonist are still packaged because he is not there, maybe some accident happened. Maybe that is why everything besides the plant is black and white - because the protagonist is depressed and struggling to find meaning? That's good environmental storytelling.
Sure, the plant grows but not the protagonist it seems. Essentially the protagonist is mute and it is not clear what s/he feels or thinks. It's sort of vicarious existance through the plant. Maybe the plant is a metaphor for the protagonist? Maybe as the plant blossoms the protagonist heals? It's too vague...
In terms of story plot - it's too little: outside of the plant care, switching between three scenes about everyday actions being repeated. Probably that's intentional but not especially interesting. With so little context the game is too predictable and there is no sense of closure or ending.
You can definitely expand the game with more backstory and possibly some ending. Good luck!