is the grain spiraled on that apple stave? and sawn straight, or is that the way you took the bark off?
I do like the hawthorn stave. I am not experienced with how apple and hawthorn dry, but I would leave them in an unheated space until they loose some substantial weight, that is if you are in a colder climate and it is heating season. I like to weight my staves when green and monitor weight drop and also look closely for checking, especially near the ends. you can get by loosing the free water the first few days, but when the free water is gone you have to go more slowly with the drying process