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Sow the seed now, individually into pots, using a soil-less seed compost (peat or peat substitute) mixed equally with coarse horticultural sand. Cover with coarse grit, and place outdoors. The cold weather will kickstart the process because this seed has a double dormancy - producing roots in its first year and top growth/leaves in the second. It needs two cold periods with warmth in between.
So you definitely have to be patient! The first time I grew these I chucked out the pots after the first winter, not realising what a slow process it was.