thank you, tianTian. how deep is your digging?

来源: 于 2007-05-15 14:42:36 [旧帖] [给我悄悄话] 本文已被阅读：次

thank you, tianTian. how deep is your digging? since currently my patio is covered by birck and some plants, digging is a quite job. I was just wondering what is the depth neccssary for the digging. Thank you very much!