A pot that is taller than wide helps the drainage tremendously. I have used a mix with hydroton/hydrokorrel/lecca clay or whatever it is called these days and the Hippeastrums did well. I just happened to have access to a lot of leftover from someone's research but it is not too expensive for just a handful of plants.
James Frelichowski
College Station, TX
--- On Wed, 10/7/09, robertwerra@pacific.net <robertwerra@pacific.net> wrote:
From: robertwerra@pacific.net <robertwerra@pacific.net>
Subject: [pbs] well drained growing media
To: pbs@lists.ibiblio.org
Cc: "Robert J Werra" <robertwerra@pacific.net>
Date: Wednesday, October 7, 2009, 5:57 PM
I used gray lava rock in pots of moraeas one year and the did terrible compared to non lava. What about granite instead. Where can it be easily obtained. Thanks, Bob