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. 8 b% Z$ ?0 w4 F' m+ i4 y : O7 L3 l7 v; ihave many flower in the yard but I want to cultivate some vegitable and berry.