I keep a separate pile, about a face cord of Hickory for the coldest nights. I haven't used that pile in the past 2 years.
Same here Horkn plus I like mixing blends depending the temperature too-(think bar/woodtender, sometimes you need to mix it a lil stronger?) One of my fave burns is beech and ash, followed closely by red oak and hickory...Truth told, my wood generally gets separated by type due to my cutting/hauling capacities-I process a half-cord at a time, that's what the shed holds per bay single row and that's what the truck will haul, so the cut of the day is usually just one species of given tree-I prefer it that way
We actually do it both ways but most does not get sorted. However, I do tend to sort out a lot of the oak as we don't have a lot of it and want to save it for those January and February nights. We rarely will burn it in daytime. Another one is pine or spruce which we tend to keep those together.
I have most wood separated but also have mixed stacks. If it isn't enough to at least fill a row or a bin, it ends up mixed.
I burn mostly softwoods and have two different groups, the day time burning wood which is lower btu wood like spruce, lodgepole pine and doug fir and my overnight higher btu burning wood which is larch (19.5 mbtus)
Outdoor wood boiler is like honey badger. Outdoor wood boiler don't care. It's all mixed up and I can pick and choose pieces as I go.
I've never considered separating it. In fact, when it comes off the splitter I'll toss it in different parts of the pile to homogenize the pile, really for no other reason than I never gave it a deep thought. Now I'll think about it, but I'm sure I'll sure I'll keep doing it the same way. I'm resisting the urge now to look at the btu table......
I never sort wood when processing. That said if a big load of oak or what ever comes in that will be what is in the stack.
I do not try to separate by type or species but I do try to separate 2017 from 2018 wood etc. I figure I don't really care about what wood I have but I do care when it should be ready.
I just separate shoulder wood from the hard stuff. Willow and pine for shoulders and "home all day" - others grouped together. If I hit a streak of oak vs say maple, I'll just load a little less in the owb.
I just sort by use. My Outdoor Furnace will burn anything. Smaller wood goes to my firepit and the smallest, I use for my smoker (Cherry, Pecan and Hickory). If I run into some dead wood, I will move it ahead of the older because it usually cures faster. I dont touch softwood. Im turning into a wood snob.
I separate shoulder season and campfire wood from the rest. What is in the main stacks is 90% oak anyway.