This both gives you more space for other plants and protects your vines from soil borne pathogens. Taller varieties of nonbranching, also called single stem, sunflowers like the 'Procut' and ...

This information allowed us to computationally model a sunflower and simulate how it behaves over the course of its growth.

Plant sunflower seeds into a big pot with soil. Place the pot somewhere where it can get sunlight. Water the pot regularly until you can see the little stem starting to poke through the soil.