In my previous article, I took some plastic plants from the dollar store and based them up for the tabletop as gigantic plants.
Same idea, different plastic succulent. Definitely sci-fi or fantasy, I would think!
This type is a 'flatter' plant, so it's not blocking line of sight as much as the previous plants.
Here's a shot with a 28mm figure to give a sense of scale…
…and if we look from ground level, you can see that this plant is shorter then the previous ones.
In fact, the plant is flat enough that your players will want to know: "Can my troops walk on that? Can my vehicle drive over that?" It's your call.