I tried that method with Acer seed Harry. I set them on damp tissue in a container in the fridge for pre chilling.
They germinated no problem, but when I planted them in pots, they died.
I was bitterly disappointed at the time, so gave up that method.
I think its to do with the shoot. It grows downwards and burrows instinctively into the soil, starts to root, then kicks the seed upright and the emerging first leaves eventually sheds the seed carcass.
I learned that the hard way, by observing Carpinus (hornbeam) seedlings (after the Acers, unfortunately-too late to learn for them)
Its amusing how they shed the carcass. I'd sowed them barely into the compost, so could see the process easily.
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