WHAT am I???

[LynneNY]

Found this growing on the back side of the waterfall hill. 
I didn't plant it there.
It looks vaguely familiar but I cannot put my finger on it. 
Can't tell if it's friend or foe.

Anyone?!?



See how tall the flower spikes are? There are many more growing up from the leaves.

[miguynmkoi]

My first thought was dandelion, a very healthy one.  But I've never seen won with so many buds all in a ball shape.  If the flower goes to seed like a dandy then I would say weed.  In my garden when there is a volunteer plant fer sure it's a weed!