In addition to the Amaranthus seeds, I also planted a set of Cosmos called the Sensation Mix seeds. These are billed as "superb cut flowers" and (unbelievably) list their height at four feet tall. That can't be, right?
I'd be VERY surprised if they achieved 4 feet tall, but they *are* clearly the tallest and most lively of all the flower seeds I planted. That is them in the photo below. See how much taller they are than everything else? But four feet tall?