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. ' j8 U1 ~% J6 w4 n! t + e- s) Z$ t8 S5 j7 Whave many flower in the yard but I want to cultivate some vegitable and berry.