I used to watch 'Day Of The Triffids' when I was a child and feared that certain large plants would chase me and kill me.
A childhood belief about plants

others believed things like this
- I used to believe that my grandma's chandelier would grow wings and chase me and kill me.— Katrien
- when I was a child, everynight I used to think that the aliens would come to my bed to kill me!!!— maRc
- I thought plants only grew when people were not looking at them.Anon
- I used to think heirloom plants grew antiques— Honorary intern Hector
- My big brother told me that if you peed in the pool, it would turn purple and chase you.— Elizabeth
- I used to believe that when people died, they turned brown just like plants do when THEY die.— Joey Schwartzman