Name: Japanese White Birch Scientific Name: Betula platyphylla Japonica Hardiness zone: 4 through 7 plant height: 30-40 feet light requirements: full sun to part shade soil water preferences: grows well in well-drained loams. Growing Instructions: 1. Scarification: mix seeds with fine peat moss, keep it moist 2. stratification: cold stratify for 60 days. Check every two weeks to make sure seeds are moist and that seeds are not molding. if there is sign of mold, seeds should be soaked in 3:2 parts of water:bleach then rinsed with clean water and put back into cold stratification. 3. germination: requires light for germination, keep it moist