One of my childhood friends grew up in a house with a mother that loved sunflowers. Each year she would plant her garden and include sunflowers in the garden as well. The sunflowers would grow up and stand up proud and tall. I will never remember how tall those sunflowers grew as they towered over us as we played and worked that garden.
Not all sunflowers are alike. They vary in size and color where some are tall and produce one flower and others not as tall but produce several blossoms that bloom on branched stems.
The sunflower named "Fun in the Sun" has plants that stand tall over 15 feet tall. These giant plants produce a beauty all of their own.
Sunflower plants known as Hallo are not as tall as they stand around 5 feet tall only a 1/3 of their super giant size cousins.
If you did not know this deep burgundy colored sunflower is known as a Chianti. A velvet like plant that will stand at full growth around 4 to 5 feet tall.