Is this a live plant or artificial?

It is artificial. The flowers are silk and the greenery is faux, so it needs no water or light to stay looking the same.

It is sold as an outdoor faux flower wall, but silk and fabric petals fade and degrade in direct sun and heavy rain. A covered porch or sheltered spot is safer than full exposure.

How does it attach to a wall?

It is a panel-style backdrop meant to be hung or fixed to a wall or frame. The listing does not detail the mounting hardware, so plan hooks, a frame or a backdrop stand.

Do the lights need to be plugged in?

Yes. The built-in lights need a power source, so plan for an outlet or extension cord near where you hang it.

Trimming faux flower panels is common, but cutting through the backing and light wiring can damage the lights. Cut away from any wiring, or size the wall to the panel instead.

How is it different from plain greenery panels?

Plain greenery panels are leaves only. This one adds purple and pink silk blooms and lights, so it gives a fuller, more decorative look with less assembly.