The show's creator Dan Povenmire confirmed that the reason Ferb has green hair and Lawrence doesn't is because it's a gene in the Fletcher family that skips and generation, stating that Reginald Fletcher had green hair when he was younger (Ferb is a only Fletcher family member to have unnatural hair color).
because someone sneezed in it when he was a child and the hair folocules absorbed the color of the snot. thats disgusting i doubt it.
Because he damaged it from chlorine
Because itβs a cartoon
linda
Flynn
It's called I, Brobot
It isn't going to be revealed.
Because they are step-brothers they have different grandmothers. Phineas' is named Betty-Joe Flynn his grandpa is Clyde Flynn. Ferbs' is Winifred Flecter and his grandpa is Reginald Flecter.
linda
Depends. If a zombie dyes its hair green, then the hair will be green.
To get green hair you have to die it.... :)
Flynn
no but you can have green pubic hair
If your hair is brown it will be forest green if your hair is blonde it will be light green if your hairis dirty blond it will be regular green
Perry the platypus
No it is actually their inventions
dave moon
no it will not turn your hair green
It's called I, Brobot
It isn't going to be revealed.