Fraxinus x ‘Northern Treasure’ Plant Data Family Name: Oleaceae Common Name: Northern Treasure hybrid ash Other Name(s): Fraxinus Other Name(s): x 'Northern Treasure' Hardiness Zones: Zone 2: (-46 to -40 C) Plant Code: frnt Flowering Color: Green-yellow, Leaf Form: 2 PlantSomething BC Garden Centre Listings No members have selected this plant.