Which parts of a plant use NPK? A graphic design

Very pleased to hear that I've been invited to some thermophilic compost training. It's 15 sessions of 3 hours each, so I've bought my first plain notebook to record the sessions. Quite a leap because I'm much happier with squared paper.

So I thought I'd do some swotting up so I can get the best out of the course, and part of that was trying to remember which parts of a plant use which macronutrients. A couple of doodles later, I'm quite pleased with the graphic which I've drawn on the fly leaf at the front of the notebook.

Nitrogen for the steam and leaves
Phosphorus for flowers and photosynthesis
Potassium for the roots