where I can buy? what kind of soil(dry or wet, soft or hard, ...) can be used to be planted? in the sunny region or not too much sun aera? Do I need to water it frequently? Thanks for any advices. # J$ s* L- Z/ M, T 6 x2 W6 {8 A' c; @& U6 d" s& Vhave many flower in the yard but I want to cultivate some vegitable and berry.