Luke's hair

I've only seen the first few minutes of this flick, and I'm quite puzzled by a strange detail. Luke's hair seems really long for 1952. Anyone with actual memories of 1950s Arkansas care to chime in on this? I grew up in the late '50s to early '60s in Canada and no boy would have had hair anywhere near as long as his. That's one of the reasons the Beatles were considered so rad in '64, and their hair was shorter than Luke's.

I have seen enough to know I have seen too much.