In spring my spouse purchased two tetrapacks of marigolds.
At that time, all of the eight marigold plants looked the same.
She planted seven towards the outside of a large pot and one in the middle.
At the current time, however, while seven of the marigolds are the size of marigolds we were expecting and have bloomed all summer,
the middle one is now two foot tall, still gaining height and hasn't bloomed yet.
See picture below (Aug. 22, 2016)
Common sense might suggest that the plant in the middle grew from a seed for a large variety of marigolds,
but it seems odd that it is the marigold in the middle that is the giant one.
When planting, there was only a 1 in 8 probability of planting the one plant from a large variety in the middle.
Have other people had related experiences with annuals they've purchased?
Or perhaps with annuals they've grown from seeds they purchased?