Answer: According to my reference, hornbeam seeds do not germinate reliably, but germination can be improved by soaking the seeds for 48 hours, drain, refrigerate for 4 months (cold stratification) and then sow in pots. Cover with 1/8 inch of grit. They germinate with a nighttime temperature of 50 degrees F. Keep the sown seeds for at least one year to allow for the possibility of germination. Sounds a bit challenging--good luck!
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