Strown means the same as 'strewn', which is when things are scattered or spread all around.
Strown can make people think of a mess or things not being in their right place.
Examples:
The toys are strown all over the floor.
Leaves are strown across the yard.
She strown the flowers in the garden.
The papers are strown everywhere, like snow!
The stars are strown across the sky at night.
I strown my toys around my room when I was playing.