Every seed on this sunflower is part of two different spirals; one turning clockwise as it moves away from the centre of the seed head, a slightly tighter one anticlockwise. If all the seeds were still present, the numbers in the two spirals would (probably) be two consecutive members of the Fibonnaci series. The sunflower is one of those in the Women’s’ Institute garden, in Bridgnorth’s Castle Grounds Park.