Why "ginger'' means red?

No it's not.
[image deleted] @MethDozer

@ThePerfectUsername That's just the root. The plant has reddish flowers. The PLANT not just the ROOT.

So lets get this right... the plant was named after a part of it which most folk have never even seen and which isn't the part of the plant that made it famous in the first place. That doesn't make sense even, not even if you think that ginger [b]is[/b] synonymous with red. :-/ @MethDozer

@ThePerfectUsername That isn't what was said or implied. Try turning it the other way around silly. The hair color was named after the color if the plant's bloom. The plant has red "heads" so red heads became colloquially known as gingers for having red heads.

@MethDozer You mean this one:


PS: I never see ginger flower for my whole life.