The spiral gets wider by a factor of phi (φ) for every quarter turn it ... it's optimal for seeds to spread in the wind. Again, the fractal design is caused by accelerated growth.

Fractals are sometimes referred to as a “visual representation of math.” They can be observed in the spatial arrangements found in many familiar forms, patterns and shapes in nature: from the ...

You have almost certainly seen computer-generated fractals – beautiful, trippy images in which colourful, intricate structures repeat ad infinitum as you fall ever further down the rabbit hole.