Paper Birch Good seed crops every other year, on average. Seed ripens from early August until mid-September.
Dispersal begins soon after ripening, and occurs earlier on injured trees.
A large number of male catkins the fall before the seed year is an indicator of a good seed crop. However, most seeds fall within the stand they were produced. A range of 100 feet is dependable for natural regeneration for full stocking levels. Some seeds may lie dormant on the forest floor for a year or more. Seed storage at room temp.