My friends and I used to believe that if you planted a rock, it would grow a rock tree.
A childhood belief about plants

others believed things like this
- I used to believe the the Elton John song, "Crocodile Rock" was about a Crocodile, named Rock.Anon
- I used to believe if you planted donut crumbs in the ground, you could grow a donut tree.Anon
- I used to think that if I planted popcorn kernels I could grow a popcorn treeAnon
- When I was a little girl, I used to believe that if you planted a banknote, a banknote tree would grow.— Domi Contreras
- I used to believe that the rock thing they used in the sport Curling, was a tea kettle.— Kaninchen
- I somehow got the idea that if I boiled a rock, it would come to life. My dad disproved that...Anon