Flowering and Fruiting- Flowering occurs in early spring (March–May), before the leaves appear, the inflorescences formed in late summer the season before flowering. Fruit maturation is in late August–September with the seeds dispersed the following spring.

Propagation by Seed: can be propagated by seed or by cuttings. Seeds are shaken from dried cones collected in September and October and can be stored air-dry in sealed containers for several years. They are most easily sown in a cold frame immediately after ripening, in sand or a sandhumus mixture. Spring planting of seeds collected earlier requires stratification in moist sand or vermiculite for 60-90 days at 5° C. Seedbeds should be kept moist and shaded until late in the summer. Germination rates are often low. Softwood cuttings taken in summer, treated with rooting promoter, and rooted under mist provide good starts; cuttings of mature wood taken soon after leaves fall also are reported to be effective. Two or three year-old seedlings are used for field planting.