Information processing and sharing is not consciousness
Consciousness is what it feels like to be something. It feels like something to be a human, or a cow, or a lobster, or an ant
It most likely does not feel like anything to be a plant.
I doubt anyone familiar with modern thinking on the subject would draw that line between humans and other animals
The Feeling of Life Itself by Christof Koch and I of the Vortex by Rodolfo Llinás are great introductions on the subject
edit: it occurred to me i left out an easy to understand part of the explanation.
Plants don’t have neurons. Nor do bacteria, or computers, or viruses, or fungi, or whatever else.
It is neurons that are the “feeling” part of matter.
That’s where the line is drawn. To answer your question