Which seed will you choose for your super sunflower?

Junior grows 2 to 3 feet tall
Skyscraper grows 10 to 16 feet tall
grows 7 to 12 feet tall Mammoth

Junior

2-3
feet

7‑12
feet

10‑16
feet

Mammoth

Skyscraper

How can you grow a super  sunflower?
Start with a seed. But not just any seed. Start with a seed from a very tall sunflower.