Cascara (Rhamnus purshiana) is an often-overlooked species in the mix of native small trees. Cascara is widely adaptable to a range of site conditions but prefers some sunlight and moist soil for best growth conditions. It has gray bark, glossy oblong leaves, small greenish-white flowers, and dark fruit in late summer that is a good food source for birds and other wildlife.
Classification: Perennial Key Characteristics: Tall shrub, spring flowers Light Requirements: Full sun to part shade Water Requirements: Moist, well-drained soil Ease of Growing: High Growth Rate: Moderate Bloom Time: April – June Spreads: By seed, vegetative cutting Benefits: Wildlife, Rain garden, Pollinators, Beneficial insects, Wildfire resistant, Riparian zones, On Portland Plant List, Hummingbirds Edible: Yes Mature Height: 15-36 feet Mature Width: 5-15 feet
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