The Natural Philosopher wrote:
Timothy Murphy wrote:
What is the best way to secure a flower window-box
on a window-ledge?
The window-ledge is granite so it is impractical to drill this.
The wall around the window is brick,
and I though of attaching a wood or metal strip
across the window.
Is there a better way?


filling it with soil is the usual method


A terra cotta or concrete window box is the only solution IME. Plastic
is fine till it dries out, which is once a day at the moment