These things are weeds. Like, weeds as in "They grow all over the place,and you never seem to completely eradicate them."
The top sprites are the berry, seed, and flower sprites, and just below them is a cute little bottle of Midnight-B-Gone that kills all Midnight Bushes touching it when used and only Midnight Bushes. It won't kill anything else from the bushes. When you hear about what the plants do, you might actually want it.
The berries contain moderate amounts of sleep toxin,and are classed as "weed," just like the bush. They also contain punishment, because they taste bad, and can be used as training weeds for Norns in C12DS with weakened instincts for that reason. Berries spit out one to three seeds when eaten, and three to five seeds when they rot.
The bush itself is also a weed, and it contains even more sleep toxin than the berry. Adult bushes take three bites to finish off,and with each bite taken out of a bush, the chances of it surviving decrease, just like the seaweed.
When a mature bush is eaten twice, if it survives, it will regrow one bite at a time. The bush contains enough sleep toxin to knock out most Norns, and enough punishment to make Norns think twice about taking a bite out of a weed next time.
Unlike all other parts of the plant, the seeds are actually semi-healthy. They contain the least sleep toxin out of all the parts of the plant, and they have a decent amount of starch for their size. They do not contain punishment, because that would make Norns stop eating seeds.
Like all my other plants, the flowers on these need to be pollinated.