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. 4 O9 F" Y8 m0 z* o, | 5 o6 H |, f, e* i' g$ P \have many flower in the yard but I want to cultivate some vegitable and berry.