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. $ ] @- C& z3 `% H6 F5 V) i g 6 N9 c0 Y! P/ _3 d* y/ R- u$ a3 jhave many flower in the yard but I want to cultivate some vegitable and berry.