I make cherry arrows 4 or 5 years ago for someone. I used shoots 4 years old. I'd made cherry arrows before in the past. Use seasoned shoots I've never had any problems. Fairly heavy, strong even spline.
SDomething a lot of people don't see in the shoot shafting.
I have a few dozzen cherry seasoning, along with a lot of other shoots. All shoots are better arrow materal after seasoning. Longer the better for all I've made arrows from.