Overview
The Pacific Madrone (Arbutus menziesii), known in Canada as the Arbutus, is the largest and most magnificent broadleaf evergreen tree native to North America. Famous for its smooth, chartreuse under-bark that reveals itself when its paper-thin cinnamon-red outer bark curls and peels away in summer, this sculptural coastal monarch graces windswept ocean cliffs and coastal rainforests from British Columbia to California.
Biology and Physical Characteristics
Arbutus menziesii grows with a dramatic, twisting, multi-branched sculptural form. Its bark is an artistic marvel: in mid-summer, the thin reddish-terracotta bark exfoliates in papery curls, exposing satiny-smooth, cool-to-the-touch chartreuse green trunk tissue beneath that gradually oxidizes to rich mahogany. Its leaves are thick, leathery, and oval (8 to 15 cm long) with a glossy dark green top and silvery-white underside.
Behavior and Ecology
In spring, the Pacific Madrone produces massive drooping clusters of fragrant, urn-shaped white blossoms that resemble tiny lily-of-the-valley bells, attracting swarms of native bumblebees and hummingbirds. By autumn, these mature into clusters of bright scarlet, pebbled, berry-like drupes that provide an essential winter food banquet for band-tailed pigeons, cedar waxwings, and robins.
Conservation and Human Impact
Assessed as Least Concern by the IUCN, the Pacific Madrone is widely celebrated and protected in coastal parks throughout the Puget Sound and San Juan Islands. However, old-growth madrones are sensitive to urban compaction, soil-borne Phytophthora root rot, and fire suppression that allows faster-growing Douglas firs to overtop and shade out mature trees.
Interesting Factoid
The Pacific Madrone is nature’s living chameleon: every summer, its entire trunk peels off in curling cinnamon-colored scrolls, exposing satiny-smooth chartreuse bark underneath that feels shockingly cold to the human touch.