Name: Golden Rain Tree Seeds Scientific Name: Koelreuteria paniculata Hardiness zone: 5 through 9 plant height: 30-40 feet light requirements: full sun soil water preferences: grows well in well-drained soils. Growing Instructions: 1. Scarification: Soak in hot tap water, let seeds sit in water for 24hrs 2. stratification: cold stratify for 90 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: sow 3/8" deep, tamp the soil and mulch the seed bed. Note* sporadic germination will occur over a 2-3 year period.