Bonsai Jack 1/4 inch Pine Bark Fines, 3.5 Gallons The cleanest and safest bonsai soil additive guaranteed. Organic bonsai soil additive Consistent sizes, ready to use, no sifting required. Amazing water retention Available in 2 Quart, 1 Gallon, 2 Gallon, 3.5 Gallon, 7 Gallon, 14 Gallon and 28 Gallon SKUs