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. : z" a* T8 o2 |; a; ~& o i% N {9 U# S$ z7 d! k3 ^have many flower in the yard but I want to cultivate some vegitable and berry.