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. ' `$ u7 t1 x5 E: W c 0 S& _3 a! [% v+ {( Ehave many flower in the yard but I want to cultivate some vegitable and berry.