At the age of five I overheard my fifteen year old brother say "We have to go plant Uncle Dick today", in regards to the cremated remains of my Uncle, whose funeral was that day.
I surmised, and believed for several years, that trees grew from people. People died and were "planted", at which time they grew in to trees...
A childhood belief about people

others believed things like this
- I used to think bread grew on trees and people just cut it up and sold it.Anon
- Hasn't everyone, at some point or another, believed that pickles grew on trees? I sure did.— Matt c.
- I used to think popcorn grew on trees until i was 13.— Davina
- i used to believe that spaggetti grew on trees!Anon
- I used to think that tea grew on trees already in mugs!Anon
- I used to believe that pineapples grew on palm trees.— mel