Rusty: Found bag my base soil came in. Says all-purpose potting soil. Had a lot of Perlite in it. Added more myself, plus greensand, castings, bone meal and pulverized dolomite. Good dark stuff and not too peat mossy nor too sticky/dense. Please take no offense and pardon my newbie-ish reluctance (caution) to mention brand. Reason? It was a better lookin quality than typical Home Depot / Walmart / big box offerings and might indicate smaller locale than I know, distributor, etc. Been goin on conservative side with nutes generally. Alternating feeds with mostly Peters 20-20-20 (5 times), Schultz's 3-7-7 (twice), and Neptune Harvest Fishn'Seaweed 2-3-1 (twice). and Vigaro Root Stim 2-5-2 (thrice). Plan to do soil test when goin into 5 gal.