This might not sound as cool as going to some orchard and asking an old farmer if you can buy or even have some of his trees that have been cut down but did you try BBQ's Galore? Did anyone mention this place yet? Sure it's aimed at city folk from LA like you and me but hey they have it so buy it. They have pecan, hickory and mesquite in burlap bags. The price isn't as cheap as going to farmer john in the country and asking him for his wood but hey you can get it at BBQ's Galore easily, I did. I got pecan because I was tired of using mesquite and hickory. These are chunks that you don't have to cut down to size. They are about a foot long each and pretty thick. I go to the one in Pasadena. Just went there today and got some Bone Suckin' Sauce. They have BBQ's Galore in the SF Valley about Sherman Oaks or Woodland Hills, something out that way.
Oh in Pasadena on Colorado near Rosemead Blvd but not quite that far they have a wood place. He sells mostly to the fire burning types, you know wood for fire places but he also sells some for smoking. He has different types of wood like peach, mesquite, apple, hickory, oak and so forth. You just have to go and it depends what he has in stock at the time. If I had the name I'd give it to you but I don't. I think it's on Colorado near Target, the big Target store.