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/ u& e3 y: y! L j) { * U+ t; j6 P/ S& l" j# f+ ?have many flower in the yard but I want to cultivate some vegitable and berry.