Puberty usually begins for girls before boys. For most girls, puberty begins About a year later, the penis and scrotum start to grow. Semen can be released.
I could send a picture so you get what I mean The average stretched length of the penis before puberty is somewhere between 2.1 and 2.9 inches. 3.
The penis grows the most during puberty. Some boys start puberty around 9 and others don't start until they are 15. Usually by the end of puberty, a guy's penis.