Forest Reproductive Materials Regions Of Provenance GB

These are defined areas within which similar ecological and climatic characteristics are found. They provide a framework for specifying sources of Forest Reproductive Material (FRM). For native species, these Regions of Provenance have been split into a total of 24 non-statutory native seed zones. Seed zones are in turn divided where appropriate into two altitude zones, below 300m and above 300m. There is a different set of seed zones for native Scots Pine. The Forestry Commission maintains the National Register of Approved Basic Material for Great Britain (The National Register). For more details see http://www.forestry.gov.uk/forestry/infd-6judsq