How deep does Sarracenias want it?

[arvin555]

I am planning to repot two of my sarrracenia species, Leucophylla and Flava. They are currently in pots 4 inches tall in 2 inches deep of water (water tray).

The pitchers fall over often now, and was thinking of repotting and putting some support for the pitchers. My main concern is:

How deep do sarracenia roots want to be able to dig in?
What is the ideal depth of a sarracenia pot for best results?

I also noticed that the pitchers fall over after a heavy downpour of rain, I suspect the pitchers get filled too much with water and then they keel over. Do you guys have this problem?

TTFN
Arvin