malus baccata mandsuria (North Dakota source) at 6 days 40 days stratification

malus baccata mandsuria (North Dakota source) at 6 days 40 days stratification. We have a few trays of these along with another seed source of the more generic Siberian crabapple, happy to see these are waking up quickly and nearly 100% germination after only a week. In the past we’ve had anywhere from 20-45 days in stratification for this same species before germination starts in the fridge, just seems to depend on the seeds, maybe age or just genetic variation.