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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Greece

60%

13%

Australia

52%

13%

26%

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42%

19%

33%

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36%

45%

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35%

20%

25%

20%

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33%

11%

29%

25%

Unknown

28%

17%

25%

28%

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26%

11%

34%

27%

197

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24%

22%

32%

22%

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23%

18%

27%

28%

171

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23%

41%

29%

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22%

18%

28%

30%

6940

Germany

20%

17%

24%

37%

Canada

16%

33%

41%

Austria

50%

42%

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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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