potting mix question

Justin Smith oothal@hotmail.com
Sat, 27 Dec 2008 20:13:12 PST
The question about coir jolted my brain and made me remember a question I had about potting mix for bulbs.
I have a lot of young Glads, Moraea, Babiana etc. that will need to be potted up this next summer in their next dormant period. I know everyone has their favorite potting mix, though my question is one of layers. 
I was wondering if anyone can tell me if there is any advantage to using the potting mix only in the lower part of the container. Then placing the bulbs on the top of the potting mix and use some small gravel ( or like material ) to cover the bulbs to their appropriate depth. 
any input with be appreciated
justin smith
woodville, TX 8b/9a 
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