Last night, I sterilized some 50/50 peat/sand mix by microwaving it wet for 15 minutes. After it cooled, I filled a 72-cell plug tray (1.5" square cells) with this sterilised mix.
I prepared 9 plugs each of:
G. violacea (giant)
Each plug was started with just one lolon of the Utric in question (or one Genlisea leaf).
These Utrics had become fairly overgrown with moss, so I carefully cleaned each lolon to remove all the original soil medium before transplanting.
If these take, and spread, then in a few months I should have a bumper crop of starter plugs of these Utrics, fully free of moss and other hitchhikers, available to give.