I am no expert but pretty sure this is a variety of Salvia Coccinea- there are several red varieties but this looks exactly like mine which is "Summer Jewel Red". Pics are of my seedlings to compare. They are beautiful and hummingbirds love them. They re-seed readily. Note the smaller seedlings next to the main one in my pic. I am sure someone with more experience will give some input, maybe @FBTS .