SelecTree: Tree Detail
COLUMBIA RIVER GORGE GIANT DOGWOOD
Cornus nuttallii 'Colrigo Giant'
Photo Locations: Hoyt Arboretum - Portland, OR
Needs ample water. Large flowers.
Has fragrant Flower.
Erect or Spreading with a High Canopy.
Rounded, Spreading or Vase Shape.
Has Deciduous foliage.
Height: 40 - 50 feet.
Width: 20 - 25 feet.
Growth Rate: 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Oval, Bluish Green or Silver or Gray Green, Red or Orange, Deciduous.
Flowers Showy. Fragrant White. Flowers in Spring. Has perfect flowers (male and female parts in each flower).
Prolific, Orange or Red Drupe, Small (0.25 - 0.50 inches), fruiting in Fall or Winter.
Bark Red Brown, Blocky or Furrowed.
Shading Capacity Rated as Moderate in Leaf.
Shading Capacity Rated as Low out of Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 2 - 9 and 14 - 20.
USDA Hardiness Zones 7 - 8.
Exposure Partial Shade to Full Shade.
Clay or Loam Texture.
Highly Acidic to Neutral Soil pH.
Seaside Tolerance is Medium in Mild Zone.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Beetle Borers and Scales, Anthracnose, Phytophthora and Root Rot.
Health, Safety & Environmental Concerns
Branch Strength Rated as Strong.
Root Damage Potential Rated as Moderate.
Allergy Health Hazard.
Desirable Wildlife Plant.
Cite this tree:
SelecTree. "Cornus nuttallii 'Colrigo Giant' Tree Record." 1995-2020. Aug 14, 2020.
< https://selectree.calpoly.edu/tree-detail/cornus-nuttallii-colrigo-giant >