G'day Keith-- thought you might like to see my hand-pollinated gerbera seed just starting to germinate.This is a half tray (the other half empty, but showing where I would have placed any seed, with fluffy parachute above ground) that were sown on the 6th March and germination showed within 7 days.All are single crossed single this year, as I had no doubles or triplexes ready at the same time as the pollen bearing singles.150 seed was sown, but I know not all were viable.
Sorry you lost your seedlings.I have no personal experience with freezing gerbera seed, but I guess I would not freeze them if saving them only from one season to the next.