Fox farm light warrior has never failed me, although quite pricey but always worth it.
FF light warrior is a wonderful soil and as stated on the product , primarily a seed start super mix. But $15 for 1 cu. Ft. Is price ineffective unless you have a few potted trees or other soil options to blend.
My personal favorite soil for potted plants is the Aurora innovations roots organics. Put your hands in it and I think you will agree. $11 for 1.5 Cu. ft. Here.$20 for 3 Cu. ft.
Nothing against fox farm but I mix the happy frog with other soils, otherwise it doesn't root out as quickly and WILL take longer to dry out.
All this talk of paying for mulch and wood chips is so far from where I'm coming from. I have way to much to mulch and wood chip, paying for these free waste products is unnecessary I think. I would think the bagged stuff at the store is much more sterile and has a lot less beneficial micorize.
Tree company's and utility company's hiring tree company's to clear by the power lines are the best choice I have. Friend up someone and see if they can drop the TRUCKLOAD of wood chips near your trees.
Alternatively I go to dumping sites these guys have and load myself with A snow shovel.
There is one site near me with 3 acres of wood chip piles dumped over the last 3 years so you can choose composted Pine for citrus and guava, 3 year old chips that got so hot it's now truckloads of free awesome soil amendment. Or fresh redwood chips that look great, breakdown slow, and are nice to walk on for paths and everywhere.Takes about 15 minutes to load a truck with a snow shovel.
I know everyone would get chips and mulch for free if possible and I hope those options exist for you out there.
There is also a Organic Materials Exchange website where people list free spent coffee grounds ( citrus, blueberries) animal poops ( bunny and horse), and wood chips. Could be beneficial to get going in other parts of the country. I know people are happy to get rid of this crap, as we are to use it.