Can't... reach... it...

So that item in the garden... the one around the turn and right across the gap right as you head to the bonfire and the door that requires the seal of artorias... how IN THE WORLD DO YOU GET TO IT?

Or rather, what is it and does it matter. I originally skipped it juust cause I couldn't get to it, and now its making me twitch because I still don't know what it is.