Acer macrophyllum 'Seattle Sentinel'

Seattle Sentinel (Columnar) Bigleaf Maple

Form and Growth Characteristics:
Plant Type - Tree
Growth Rate - Slow to medium growth rate; Unusually upright, columnar habit
Mature Height - Up to 50' tall
Mature Width - 20' wide
Longevity -

Ornamental Characteristics:
Flower - Yellow, fragrant, produced in 4-8” long nodding racemes appearing with the leaves in April-May; each flower is approximately 0.33” across.
Fruit - Samara, approximately 1.5” long, nutlet covered with brown pubescence, wings nearly glabrous, forming a 60degree angle from wing to wing.
Leaf - Young emerging leaves are often reddish bronze, maturing to glossy dark green, pale beneath; Opposite, simple, often smaller than the species.
Fall Color - This cultivar does not usually change color in the fall.
Bark - Gray to reddish brown, furrowed with small flattened platelets.
Other Features -
Possible Use - Recommended for planting natural areas
Season Of Interest -

Culture and Care:
Care Requirements - Prefers cool moist environment; zones 5-7(9)
Native Habitat - Species native from Alaska to southern California. Cultivar a 1992 introduction from the Center for Urban Horticulture, Washington Park Arboretum, discovered in 1951
Diseases and Insects -
Strength - Fairly drought tolerant
Weakness - Seems to pop up in fence rows and waste areas, invasive root system that can break walks and drives;

Plants of this taxon:
-not currently in our collection-

Find Related Plants:
- Other plants with the common name Maple.
- Other plants of the family Aceraceae.
- Other plants of the genus Acer.
- Other plants of the species Acer macrophyllum.