Update: Dahlias and Elephant Ear (But Maybe Just Dahlias)

Just a little over a week ago, I posted the first peek of little sprouts of Dahlias and Elephant Ears poking through the soil in a pot that I started in our dining room.  Welp, fast forward a week and we suddenly have a lot of growth from three shoots.  But, I'm pretty sure that I planted four bulbs/tubers.  Three Firebird semi-cactus Dahlias and one Elephant Ear Black Magic.   The three plants that have grown all look alike, so I'm presuming that these are the Dahlias.  But, the Elephant Ear is missing.  Perhaps a little bit of excavation is called for to figure out if the Elephant Ear is, indeed, down there (or if I forgot to plant it!) and/or if something is wrong.  Maybe I planted it too deep?

My hunch is that the bulb is still simply dormant - and that's not an uncommon problem based on a quick tour around the Web - and that with time, it will come up.