I have one of @Scissor-Hanz’s headband growing now, though i tried about 7 seeds 1st time and no luck, so i stuck 5 more in a little water then added a drop or two of 3% hydrogen peroxide, changed the water mix about 3 times and after a week/10 days 3 had sunk, i then put em in paper towel and ziplock on a v.low heat mat for a wee bit… then when the one 1 plant i have sprouted,… before that i had had two pop tap roots but not crack the soil…!
Good luck with your seeds cracker @MadScientist…
Pic of the headband 
It’s been growing slowly but it’s taking off a wee bit now… I’m sure you’ll get a few growing…
i reckon there’s a 20/30% germ ratio …?!
Happy growing ,
Gaz