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. # x: |: D+ w, O+ o4 D, p' @6 t + g- u9 y* i4 a @' E5 d$ vhave many flower in the yard but I want to cultivate some vegitable and berry.