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. ( {/ F. S5 e$ G0 h4 c . I: @0 `9 {' W9 D5 v. l7 ehave many flower in the yard but I want to cultivate some vegitable and berry.