Oregon Department of Forestry:
Forest Tree seed Zones for Western Oregon (1996)
Zones 1, 2, 3
0 - 2,000'
2,000 - 2,750'
>2,750'=500' bands
Zones 5
0 - 500'
>500'=500'bands
Zones 8
single elevation zone
Zones 4, 6, 7, 8, 9-16
0 - 1,000'
>1,000'=500' bands
