Why don t redwoods grow in Oregon?

Portland does not have the elevation or snowpack that the Sierra do, or coastal fog to the extent that is seen along the northern California coast, where champion redwoods thrive. Despite this, we're finding that redwoods and sequoias do well in the city.



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As its nickname suggests, giant or coastal redwoods thrive in the moist, humid climate of the Northern California coast, where marine fog delivers precise conditions necessary for its growth. The fog adds moisture to the soil and helps trap it there by lowering the rate of evaporation.

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The redwoods in Oregon sit at the very northernmost limit of where they can grow, and simply add to the already impressive beauty of Oregon forests. Coast redwood naturally has a very limited range of where they can grow, and are only found alongside the Pacific Coast.

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While most people stop at the Redwoods National and State Parks in northern California, the trees continue growing across the border, planting their roots into the forests of southwest Oregon. Admittedly, the trees in Oregon are much smaller and far less impressive than the famous stands in California.

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1: Redwoods Only Grow on the Northern Pacific Coast Slowly, over time, climate change and coastal rain patterns limited redwood forests' range to their current boundaries. If you travel inland more than twenty-five miles inland the redwoods start to thin out.

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The largest patch of old-growth redwood forest is located in Humboldt Redwoods State Park, California, United States.

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Coast redwoods range from southern Oregon to central California, extending not more than fifty miles inland- only as far as the coastal climate has its influence. Fog plays a vital role in the survival of these trees, protecting them from the summer drought conditions typical of this area.

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Coast redwoods also have a limited natural range and are found alongside the Pacific Coast in northern California and southern Oregon. Redwoods are the tallest trees in the world and grow cloaked in fog that rolls through their canopies as warm air masses are cooled by the Pacific Ocean.

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Massive, ancient giant sequoias live in three groves in Yosemite National Park. The most easily accessible of these (spring through fall) is the Mariposa Grove near the park's South Entrance, off of the Wawona Road (Highway 41). Two smaller—and less visited—groves are the Tuolumne and Merced Groves near Crane Flat.

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Redwoods also boast some of the world's oldest trees—California redwoods can live more than 2,000 years, while their close relatives, the giant sequoias, have been recorded at nearly 3,500 years of age.

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Fewer than 120,000 acres, or 5 percent, of the original redwood forest remains today. It's a tragedy to have lost most of the ancient redwoods; however, science-based forest restoration holds the key to bringing back what we've lost.

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