Clay soil with rocks on top works fine. The Jobe's also work really
well. My only suggestion is to put fairly smallish plants in fairly
large containers. They grow like crazy in the water -- I got my first
water lily flower today, what a sight. My pond and other stuff is at
www.marlia.com. I gave away about 18 huge papyrus plants last week
that started from a small planting in a big pot. Kim