permaculture

[yarrow@sfo.com]

Bamboo -- I don't know what to do about bamboo that has already 
invaded a house. But if you add a root barrier, make sure it is 
angled not vertically but away from the plant, so that as the rhizome 
travels horizontally, it has to grow upward when it encounters the 
barrier. If the barrier is vertical or angled the opposite way, the 
rhizome will grow down (and then up again when it can).