Looks to me like bright red thorns on the brand new growth, dry black thorns on the middle-aged growth, and almost smooth old canes....
Photos are the property of and copyrighted by their contributor, all rights reserved. Downloading or use is prohibited without the contributor's explicit consent. Photos also copyrighted by HelpMeFind: Please report illegal use.
Looks to me like bright red thorns on the brand new growth, dry black thorns on the middle-aged growth, and almost smooth old canes....