Tsuga mertensiana Plant Data Family Name: Pinaceae Common Name: mountain hemlock Other Name(s): Tsuga mertensiana Hardiness Zones: Zone 4: (-34 to -29 C) Plant Code: tsme Pest: Heart rot, Fruit Color: Purple, Brown, Flowering Color: Blue, Leaf Form: Needle-like, Leaf Arrangement: Spiraled, Leaf Shape: Acicular, PlantSomething BC Garden Centre Listings No members have selected this plant.