How deep is the root system of a giant sequoia?

4 meters (13 feet)

20 meters (60 feet)

40 meters (130 feet)

80 meters (260 feet)

The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil.

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Peter & Joyce Grace www.giant-sequoia.com

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They have a large oxygen supply from the start

Oxygen is created during protein reduction

Oxygen comes in through pores in the shell

They don't need oxygen at all

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