Plants are conscious. See Cleve Backster's research. Bacteria is now known to be intelligent.

Even Harvard has the 'equipment' to see it. LOL!
What's being shown in this video is a slime mold colony LEARNING the quickest route to food. The final frames show how it applies that learning and wastes no time getting to the food.

How Brainless Slime Molds Redefine Intelligence [Video]
Single-celled amoebae can remember, make decisions and anticipate change, urging scientists to rethink intelligent behavior
https://www.scientificamerican.com/article/brainless-slime-molds/

I would love to see more people studying and talking about the consciousness of all things...I'm still on the fence about minerals. But I did my own experiment with a multi-meter mV datalogger. My plant was quicker to respond to a neighbor across the road slamming a car door than I was while concentrating and feeling quite safe. Its reaction was measured as a spike to 30 mV from it's holding pattern around 7mV. That's sentience, awareness, consciousness.

Thanks for shining a light on this subject matter, @alchemage. Do more, please! :)