Seeds
Laburnum alpinum
Laburnum (Scotch)
Laburnum (Scotch)
6-8 % @ < 4 °C
Generally effective, a significant proportion of live seeds should germinate
Approximate date to initiate artificial pretreatment (for 1 March sowing) -Orthodox – seeds that can be dried without harm, and once dried can be frozen, stored for years with little deterioration and relatively easily revived.
Raising Trees and Shrubs from Seed (PDF-648 KB)
Forestry Commission Practice Guide 18.