It quickly grew to 7 or 8 feet, and had green berries that turned to shiny black in the fall, eaten by birds.
The berries make a red ink or dye.
Wikipedia "fact" - the U.S. constituion was written with ink made from pokeberries.
Another fact, this one from personal experience: pokeweed is prolific. It loves horse manure and urine-soaked wood shavings. This is now my manure pile every summer:
But any stray berries that take root in my pasture are ruthlessly mowed to shreds. Two manure piles make for quite enough pokeweed.