When I was a child, there was a house with a monkey-puzzle tree in the garden. It was very sinister looking, and we all believed that you couldn't speak when walking past it, or terrible things would befall you. No matter how noisy we were as children, none of us spoke when passing this tree. To this day, I still can't pass a monkey puzzle tree without remembering, and without speaking!
A childhood belief about plants

others believed things like this
- When I was five, I believed God was big as a tree, a tree being the biggest thing I could convieve of.
— Chris - I used to believe that the Doller Tree store was an actual tree.Anon
- I used to falsely believe that planting a fruit pip in the garden would actually grow a tree or bush.— Natasha
- I used to think that partridge in a pear tree was "cartridge" in a pear tree(christmas song)— Erica
- when i was a kid i used to believe the monkey could speak— killian
- I used to think that the tree branches moving was making the wind, not the wind making the tree branches move.— Jenny