Plan on making this blend for some potted trees that are in 4x9 tree pots. Open to criticism...
Top Pot Recipe
(35%) Sunshine Mix #4 - Only because I have an extra bale on hand.
(30%) Course Pumice
(20%) Course Pearlite
(5% - 10%) Decomposed Granite
(5% - 10%) Charcoal
The volume of charcoal...