5#狗拿耗子. n2 x: R5 r, Y% Y- ~2 G# W' i) b
Both top soil and manure (organic fertilizer-waste matter produced by cattle/sheep) are available in bags at Homedepot, Rona, Superstore and so and so and so........
As what I know, commercial potting soil is very often sawdust+peat moss and more preferable for indoor pot growing since it has a more sterile composition in comparison to topsoil.