Bonsai Tree Soil - Conifer Blend The perfect soil for junipers, Japanese black pines, Japanese white pines, cedar, cypress, & all other conifers. When it comes to choosing bonsai soil, using right blend is important. That’s why we only carry soils blended exclusively by Tinyroots. The soil you use affects rooting, feeding, watering & transpiration; it is where half your tree lives so this is our second biggest consideration in maintaining your bonsai. Our soil is a mix of 100% double-sifted pine mulch fines, Turface, coarse river sand, & Pumice. It’s hand mixed, dried, & bagged. Bonsai Tree Soil - Conifer Blend. Comes in 2 Quarts, 4 2.5 Gallons, & 5 Gallon Resealable Bag