We recreated Ben Sparks geogebra app which demonstrates how seeds would look being sowed at different fractions of a full turn.
Here is some polar graph paper to draw patterns by hand first.
You might like to try with 1/4, 1/5, 3/8, 5/9 and moving out by one circle each time you sow a seed.
On Geogebra you can set up a slider r and then use Sequence((0.5 i; i r*2 π),i,1,150)