I bought plenty of Tuberous sundew seeds a few months back. I guess this is the right time to prepare the seeds and sow them since it's the time where tuberous sundew germinates and tuber awakes.
Some of the seeds require a summer condition before they germinates, I found the process of Scarification from a few links.
I first soak the seeds in GA3 (Gibberellic Acid-3) for 1 night before I prepare the burnt leaves process and soak the seeds in this solution using 60ºC and below water for 2-3 mins. Then, I sow the seeds in 2 part sand and 1 part peat.
No seeds germinates, most likely due to the weather and conditions is not suitable here in Singapore.