Actually, we’ve learned not to consume collard greens, carrots or parsnips before we go to bed. The darned things keep us awake all night (multiple canines were given “pot likker” and they, too, seemed super-energized.) Collards are scarey.
Collards cost more than spinach, around here. Kale is cheap, though. And dragons like it, although Baby seems to like arugula best.