Sequoiadendron giganteum

The giant redwood can grow 250 to 300' in the wild and is among the most massive trees in the world. Its trunk diameter ranges from 15-20'.  These long-lived trees have a lifespan of 2000 to 3000 years.  They can be found growing on the western slope of the Sierra Nevada Mountains in California.  When planted in the correct climate outside its native habitat, success is possible, but heights may only reach 40-60'.  

When young, trees will have a pyramidal shape.  As they age, they keep the same shape but will lose their lower branches.

They are best located in cool, moist climates with consistent moisture.  They will grow in sandy loam type soil with a consistent temperature range.  It will not tolerate drastic climate changes or clay soil. 

The bark is reddish-brown, spongy, ridged, furrowed, and textured (cork-like).

These unique giants are protected in national parks such as Yosemite, Sequoia and Kings Canyon.

Forest fires are a high risk for seedlings and saplings.  As the tree ages, its rapid growth, fire resistant bark, elevated canopies and self-pruned lower branches place mature trees at a much lower risk for being killed by fire.  

Insects, Diseases and Other Plant Problems:  Dieback, blight and butt rot are minor diseases that may be present.

VIDEO created by Ryan Contreras for “Landscape Plant Materials I:  Deciduous Hardwoods and Conifers or Landscape Plant Materials II:  Spring Flowering Trees and Shrubs” a plant identification course offered by the Department of Horticulture at Oregon State University