This thing just
popped up appeared near my bush roses.
It looks like, well...
Credit card size shown for reference -- so it's probably 10cm
long tall and 1.5 cm wide at the shaft base.
Geography = Eastern US
It's one of the stinkhorns, and yes it does look like a phallus. Surprised you haven't mentioned the stench yet, but you may notice it shortly, especially if more arrive. Its Latin name is Mutinus elegans; they don't last long, but you may find more appearing associated with the mulch. It's not toxic, though not edible, should disappear fairly quickly, but if you don't like the look of it, or feel it may shock some people, you can snap it off at the base and dispose of it, preferably wearing gloves. More info here https://www.bbg.org/news/nastiest_mushroom_ever
Amazing isn't it?