Fruit and Seed
Seed collection: Sugar maple fruit is a samara. Fruits can be collected in fall (September to November) after they turn from green to brown or after they fall to the ground. They can be stored dry for several years in air tight containers in the refrigerator.
Seed dormancy: Sugar maple has physiological dormancy.
Seed germination: Remove the winged portion of the fruit and stratify seeds using moist chilling for 60 days to satisfy physiological dormancy. Following stratification, sow seeds in a nursery container to produce a seedling or sow them in a plastic container in the classroom to observe germination.