HOLY CRAAAAAP!! This Stuff works like magic! You might as well throw away everything you know about soil because the owner of the nursery has it all figured out. When I first bought my trees, they were on a slow decline, lychees got really bad leaf burn, mango slowly dying of root rot, etc. But then I switched to this soil because the guy explained how commercial potting soil/planting mix actually harms the tree rather than helping it. The mix is made of sand, pumice, charcoal, and perlite. When I switched half the old soil to the lychee, it immediately dropped the bad leaves and went into a giant growth spurt, without any of the classic californian lychee leaf burn, then I switched my Pickering Mango tree to that stuff, and it went into a nice growth flush ON A TURPENTINE ROOTSTOCK. All my plants except the barerooted ones show extreme improvement in tree health. I am not trying to promote his stuff, but rather im giving my review on the soil. Make sure u guys dont bareroot any trees cause that'll kill em. make sure you get down to the main rootball, then stop.