The underlying design of this piece is the Golden Mean. The center square is flanked by two sets of whirling squares, the one on the left moving counterclockwise, and the one on the right, clockwise. There are some small areas still left white, but that is temporary.
The flower of the bell pepper is in the lower left corner, and the leaves on the upper right. The flower has six petals, and to some extent, the lobes of the peppers form a pattern of six, though that is subtle. The main geometry is the triangle.