Excuse me for being off subject but is that Drosera hilaris alongside? Always good to have extra plant material - if you can keep it under control, ha!
Interesting, I just recently switched to a "wet cup of sphagnum" this gives me hope! Also, how dry is dry, and for how long? I have renifomis but have never gotten it to flower, lots of "leaves" but no flowers, so I'm willing to try anything.It's in a wet cup of sphagnum. That's it.
Also just discovered that drying out both my humboldtii and reniformis have made them take off, and a dry spell has triggered two alpina inflorescences...so only a couple species like nelumbifolia seem to really like it sopping.