forest for the trees

This is my very first post on my very first blog about, of all things, gardening. I could fill a forest with the things I don't know and can't identify, but I do try. We moved into this landscaped bungalow 6 years ago barely interested in or capable of green things. I've changed. I find myself googling ground covers and planning, always planning, to someday have my imaginary garden meet what's actually shaping up and filling out all around us. It is a source of constant, industrious distraction.

Speaking of distraction, on my way to a long overdue weeding session I spotted this growing in a shaded corner on the southern side of the house. It's either my new favorite weed or a very long distance volunteer. Maybe somebody's unwanted impatiens. Any ideas?