yeah, do everything to them you dont believe they can survive, they'll enjoy it. Nearly lost my teeth on the seed coat so I then repurposed a kitchen machine and made a seed tumbler lined with sanding paper, tossed the seeds and a few lintels in there for good measure. A but later the lintels where gone, ground to dust, the seeds barely impressed
So finally I nicked some with knifes and burned through the coat of others with a hot wire cutter. I know I am cruel but it worked, I then soaked all until they showed signs of germination, after messing with the seedcoat they soaked, they wouldnt do that before. I will feature te plant in my log.