The first picture shows you a view, and the second gives you a scale. That's my 11.5 planted next to the biggest of the grouping. And as it happens, my foot is almost exactly one foot long.
I kinda expected to see a hookah-smoking caterpillar perched on top one of 'em:
Caterpillar: By the way, I have a few more helpful hints. One side will make you grow taller...
Alice: One side of what?
Caterpillar: ...and the other side will make you grow shorter.
Alice: The other side of what?
Caterpillar: The MUSHROOM of course!