And many farmers around here burn brush after clearing it from their land.
The ash is good for the garden.
Especially if you dig up your garden layer the ash.
Wish I could still burn our trash here in Northern California. Liked my burn barrel very much, but I guess it was air pollution in Riverside county that caused a state-wide ban on such burning. Ugh..
As for the Appalachains—I imagine its the season for burning all the downed trees and cut back brush and what not from Winter. We are still allowed to do that here and are doing that these days—when its not raining. Rains have been happening late this Spring...