Do you have a wood stove or fireplace?   Make sure the ashes are cold before removing from the stove/fireplace.  Place them in a metal container with a secure metal cover.  Never place ashes in an open paper or plastic container on the porch or near your home.  Many fires are started when ashes, which are thought to be out, are blown around by the wind.

Be sure to call for a permit before burning any brush or leaves.